Micaela paid the amount of $63.8 in the end for a concert ticket.
How to calculate the percentage discount?Subtract the final price from the original price then Divide this number by the original price. Finally, multiply the result by 100. You've obtained a discount in percentages.
Reformulate the basic equation to:
% discount = 100 × (original price - discounted price) / original price
To calculate the final price that Micaela paid, we need to apply the discount and the processing fee to the original price of the ticket.
The discount is 20% of the original price of $76, which is:
discount = 0.2 x $76 = $15.20
So Micaela paid:
price after discount = $76 - $15.20 = $60.80
Now we need to apply the processing fee. The processing fee is 5% of the price after the discount, which is:
processing fee = 0.05 x $60.80 = $3.04
So the final price that Micaela paid is:
final price = $60.80 + $3.04 = $63.84
Therefore, she paid $63.8 in the end, rounded to the nearest cent.
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Solve the system by substitution.
Answer:
x=3
y=-34
this should be correct
Find the area inside the loop of the following limacon: r=7−14sinθ
The area inside the loop of the limacon given by the polar equation r = 7 - 14sin(θ) is 294π square units.
To find the area inside the loop of the limacon given by the polar equation r = 7 - 14sin(θ), we need to evaluate the integral for half of the area and then double the result.
The curve of the limacon has a loop when 0 ≤ θ ≤ π, so we integrate from 0 to π. The area can be calculated as follows:
A = 2 ∫₀^π 1/2 r² dθ
Using the equation for r given, we can substitute and simplify:
A = 2 ∫₀^π 1/2 (7 - 14sin(θ))² dθ
A = 2 ∫₀^π 1/2 (49 - 196sin(θ) + 196sin²(θ)) dθ
A = ∫₀^π (98 - 392sin(θ) + 392sin²(θ)) dθ
Using the trigonometric identity 1 - cos(2θ) = 2sin²(θ), we can simplify further:
A = ∫₀^π (98 - 392sin(θ) + 196 - 196cos(2θ)) dθ
A = ∫₀^π (294 - 392sin(θ) - 196cos(2θ)) dθ
Integrating with respect to θ:
A = [294θ + 392cos(θ)sin(θ) + 98sin(θ)]₀^π
Evaluating at the limits of integration, we get:
A = [294π + 0 + 0] - [0 + 392cos(0)sin(0) + 98sin(0)]
A = 294π - 0 - 0 = 294π
Therefore, the area inside the loop of the limacon r = 7 - 14sin(θ) is 294π square units.
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The table below shows the value in dollars of a car at the end of x years
The exponential function that models this situation is y = 11,000 (0.85)ˣ. The correct answer would be an option (B).
What is an exponential function?An exponential function is defined as a function whose value is a constant raised to the power of an argument is called an exponential function.
The table below shows the value in dollars of a car at the end of x years.
Number of Years, xValue, v(x) (dollars)
0 11,000
1 9,350
2 7,948
3 6,755
Let the formula for an exponential function would be as
⇒ v(x) = abˣ
Substitute the value of x = 0 and v(x) = 11,000 in the above equation,
⇒ 11,000 = ab⁰
⇒ a = 11,000
Now, substitute the value of x = 1 and v(x) = 9,350, and we get
⇒ 9,350 = ab¹
⇒ 9,350 = (11,000)b
⇒ b = 9,350/11,000
⇒ b = 0.85
Substitute the value of a = 11,000 and b = 0.85 in v(x) = abˣ,
⇒ y = 11,000 (0.85)ˣ
Thus, the exponential function is y = 11,000 (0.85)ˣ.
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Kyle runs 18 miles in 112.5 minutes. If he continues at this rate, how long will it take him to complete the marathon (26.2 miles)?
Write a function that models y in terms of x. Round any coefficients to the nearest tenth.
X 0 5 10 15 20
y 0 4.02 5.69 6.97 8.05
y= ?
The exponential equation representing the given table is -
y = 2.84(1.072)ˣ.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given is a function table as shown in below -
{X} 0 5 10 15 20
{Y} 0 4.02 5.69 6.97 8.05
Let the expression be -
y = A(B)ˣ
At {x} = 5, y = 4.02.
We can write -
4.02 = A(B)⁵ ... Eq { 1 }
At {x} = 10, {y} = 5.69
We can write -
5.69 = A(B)¹⁰ ... Eq { 2 }
Refer to the graph. The point of intersection represents -
A = 2.84
B = 1.072
The equation would be -
y = 2.84(1.072)ˣ ... Eq { 3 }
Therefore, the exponential equation representing the given table is -
y = 2.84(1.072)ˣ.
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What is the value of 30 ml in teaspoon?
The conversion from ml to teaspoon is 1 ml = 0.202884 tsp. This means that 30 ml is equal to 6.08652 teaspoons.
This conversion can be calculated by multiplying the volume in ml with 0.202884. The formula for this conversion is Volume (tsp) = Volume (ml) x 0.202884. For example, if the volume is 30 ml, the calculation would be 30 ml x 0.202884 = 6.08652 tsp. This means that 30 ml is equal to 6.08652 teaspoons.To convert between other units of volume, such as liters and gallons, the conversion factor must be changed. For example, to convert from liters to teaspoons, the conversion factor would be 0.0147867. To convert from gallons to teaspoons, the conversion factor would be 76.7526. It is important to remember that the conversion factor must be changed depending on the units being converted.In conclusion, 30 ml is equal to 6.08652 teaspoons. The conversion from ml to teaspoon is done by multiplying the volume in ml with 0.202884. To convert between other units of volume, the conversion factor must be changed.
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Solve for x show proofs
The value of the hypotenuse , x is 19.2
How to determine the value of the hypotenuse , xFrom the question, we have the following parameters that can be used in our computation:
Rise = 17
Length = 9
The value of the hypotenuse , x is calculated as
x^2 = Rise^2 + Length^2
Substitute the known values in the above equation, so, we have the following representation
x^2 = 17^2 + 9^2
So, we have
x^2 = 370
Take the square root of bpth sides and evaluate
x = 19.2
Hence, the value of x is 19.2
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4. Greta has finished reading 15 pages from a 20-page
magazine article. Which decimal represents the
fraction of the 20 pages Greta read?
A. 0.15
B. 0.35
C. 0.75
D. 1.33
Answer: C. 0.75
Step-by-step explanation:
formulate 15 ÷ 20
= 15/20
= 3/4 (convert 3/4 to a decimal)
= 0.75
A random sample was taken to determine whether students from a certain grade prefer to wear Brand A, Brand B, or Brand C tennis shoes. There were eleven students in the sample. Two students preferred Brand A, four students preferred Brand B, and five students preferred Brand C.
If there are eighty-eight students in the population, about how many of them would you expect to prefer Brand C?
16
32
55
40
Answer:
40
Step-by-step explanation:
you can multiply 88 by 5/11 to get 40
1 kilograms of pears cost as much as 1. 5 kilograms of apples. Alex paid $34. 20 for 4 kilograms of pears and 3 kilograms for apples. How much did 1 kilogram of pears cost?
The cost of 1 kilogram of pears is $5.70.
How determine the costThe cost of 1 kilogram of pears can be found by using the given information and setting up an equation. First, let's repeat the question: "1 kilogram of pears cost as much as 1.5 kilograms of apples. Alex paid $34.20 for 4 kilograms of pears and 3 kilograms for apples. How much did 1 kilogram of pears cost?"
Let's assign variables to the unknowns:
- P = cost of 1 kilogram of pears
- A = cost of 1 kilogram of apples
From the question, we know that:
- 1P = 1.5A - 4P + 3A = 34.20
Now, we can use substitution to solve for P.
1. Substitute 1.5A for P in the second equation: 4(1.5A) + 3A = 34.20
2. Simplify: 6A + 3A = 34.20
3. Combine like terms: 9A = 34.20
4. Solve for A: A = 34.20/9 A = 3.8
5. Substitute 3.8 for A in the first equation: 1P = 1.5(3.8)
6. Solve for P: P = 5.7
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Helppp
Find the radius of a circle which has a sector area of 9pi whose central angle is 90 degrees.
Explanation:
90/360 = 1/4
We have 1/4 of a pizza here. This slice is equal to an area of 9pi square units. The full pizza is 4*9pi = 36pi square units.
Use the circle area formula to determine r.
A = pi*r^2
36pi = pi*r^2
36 = r^2
r = sqrt(36)
r = 6
The circle has radius 6 units.
T/F?The probability of the union of two events occurring can never be more than the probability of the intersection of two events occurring.
This statement is False as the probability of intersection of two events is always less than the probability of union.
This assertion is untrue. Contrary to popular belief, the likelihood of two occurrences coming together is always higher than or on pair with the likelihood of them colliding.
The chance of two events A and B occurring together can be calculated using the following formula to see why:
P(A ∪ B) = P(A) + P(B) - P(A ∩ B)According to this equation, the probability of A and B joining together is equal to the total of their individual probabilities less the likelihood of their colliding.
When we rewrite this calculation and focus only on the likelihood of the intersection, we obtain:
P(A ∩ B) = P(A) + P(B) - P(A ∪ B)Now it is clear that the probability of the intersection is determined by subtracting the probability of their union from the sum of the probabilities of A and B.
P(A) and P(B) are both less than or equal to P(A B), since probabilities can never be negative. P(A + B) is therefore less than or equal to twice P(A + B) when they are added together. Thus, it follows:
P(A) + P(B) - P(A ∪ B) ≤ P(A ∪ B)This indicates that, contrary to what the original statement implied, the probability of the intersection is not greater than or equal to the probability of the union.
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In an online game, you receive -3 points for every banana your character slips on during a race. The total points from slipping on bananas during one race were at most -27. When the character slips, it takes 2 seconds for him to resume the race. Write and solve an inequality to find the least number of bananas your character slipped on. At least how many seconds of race time
Answer: Let's call the number of bananas your character slipped on as "x". Then, the total points from slipping on bananas would be -3x. And since the total points from slipping on bananas during one race were at most -27, we can write an inequality to represent this:
-3x ≤ -27
Now we'll solve for x:
Divide both sides by -3:
x ≥ 9
So, the least number of bananas your character slipped on is 9.
To find the least number of seconds of race time, we need to multiply the number of bananas by 2 seconds per banana:
9 bananas * 2 seconds/banana = 18 seconds
So, the least amount of race time your character took to slip on bananas is 18 seconds.
Step-by-step explanation:
if you borrow $500 for 4 years at an annual interest rate of 6 years how much will you pay altogether
The amount will be after 4 years at interest rate of 6%, $624.76
To calculate the total amount you will pay after borrowing $500 for 4 years at an annual interest rate of 6%, you can use the formula for compound interest:
A = P x (1 + r/n)^(nt)
where:
A is the total amount,
P is the principal amount (the initial amount borrowed),
r is the annual interest rate as a decimal,
n is the number of times interest is compounded per year,
t is the number of years the money is borrowed for.
In this case, P = $500, r = 6%, n = 1 and t = 4.
So, the formula becomes:
A = $500 x (1 + 0.06/1)^(1 x 4)
A = $500 x (1.06)⁴
A = $500 x 1.249536
A = $624.76
Therefore, you will pay a total of $624.76 after borrowing $500 for 4 years at an annual interest rate of 6%.
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10x-9y=46 and -2x+3y=5 solve using elimination
Answer:
x = 15.25
y = 71/6
Step-by-step explanation:
10x -9y = 46
-2x + 3y = 5
Time the second equation by 5
10x - 9y = 46
-10x + 15y = 25
6y = 71
y = 71/6
Now put 71/6 back in for y and solve for x
10x -9(71/6) = 46
10x -106.5 = 46
10x = 152.5
x = 15.25
Let's check
-2(15.25) +3(71/6) = 5
-30.5 + 35.5 = 5
5 = 5
So, x = 15.25 and y = 71/6 is the correct answer.
How to Calculate the Moment of Inertia for a Cylinder?
The moment of inertia (I) is a measure of an object's resistance to rotational motion around an axis. The moment of inertia of a cylinder can be calculated using the following formula:
I = (1/2) × m × r²
where:
I is the moment of inertia of the cylinder
m is the mass of the cylinder
r is the radius of the cylinder.
Here are the steps to calculate the moment of inertia for a cylinder:
Determine the mass of the cylinder. This can be done by weighing the cylinder on a scale or by using its density and volume. The formula for the mass of a cylinder is:
m = density × volume
Measure the radius of the cylinder. This is the distance from the center of the cylinder to its outer edge.
Substitute the values of m and r into the moment of inertia formula:
I = (1/2) × m × r²
Calculate the moment of inertia using a calculator.
Note that the moment of inertia of a hollow cylinder is different from that of a solid cylinder. To calculate the moment of inertia of a hollow cylinder, you need to subtract the moment of inertia of the hollow space from the moment of inertia of the solid cylinder using the parallel axis theorem.
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what is 250 seconds in minutes
We know that 60 second is equal to 01 Minutes.
and 90 second is equal to 01 and half minutes.
Therefore, 04 minutes and 10 seconds consists 250 second.
Second:
The second is the critical unit of time. The default unit of time in the SI system of units. It can be defined as the time required for an electromagnetic field to propagate through a vacuum of 3 x 10 5 km.
1 solar day consists of 86,400 seconds. One minute is 60 seconds.
The second is not small enough and is limited to use by scientists and engineers, so we got a smaller unit like this:
1 millisecond equals 10 -3 seconds.1 microsecond, equal to 10 -6 seconds.1 nanosecond, 10 -9 seconds.10 -1 picosecond equal to 12 seconds.Minutes:
Minutes are a significant unit of time. Equal to 60 seconds. One hour includes 60 minutes. Minutes can be expressed as min. Included in the SI measurement system.
According to the Question:
250 seconds = 4 minutes and 10 seconds.
To obtain this result proceed as follows:
Divide 250/60, take the integer part of INT(250/60) and write it as minutes: 4.
Calculate the remainder, MOD(250,60), and write it down as seconds: 10.
Proof: (4 × 60) + 10 = 250.
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Name the segments in the figure below.
**SCREENSHOT INCLUDED**
The segments in the figure are:
segment QT
segment QR
segment QS
segment RS
segment ST
segment RT
How to differentiate between a ray and a line?A line is a straight path of points that has no beginning or end.
A ray is a portion of a line which has one endpoint and extends forever in one direction.
Note: the arrow is an indication no endpoint.
Let's put the definitions:
Line QT (lines are bound by two arrows pointing left and right)
ray ST (rays are bound by a dot and an arrow)
ray RT
ray QT
ray TQ
ray SQ
ray RQ
segment QT (segments are bound by two dots)
segment QR
segment QS
segment RS
segment ST
segment RT
Check the attached image for the correct selection
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14. A box of mineral water contains 24 bottles from a given factory. A woman bought 135 boxes from the company. If each bottle of water has a mass of 728g, find the total mass in kilograms of all the 135 boxes of water, correct to 1 decimal place.
The total mass of the 135 boxes that the woman bought is 2358.7 kg
What is an equation?An equation is an expression that shows the relationship between numbers and variables using mathematical operators like addition, subtraction, multiplication and division. Equations can be linear, quadratic.
Each bottle of water has a mass of 728g. A box of mineral water contains 24 bottles from a given factory, hence:
Mass of each box = 24 bottles * 728 g per bottle = 17472 g
The woman bought 135 boxes, therefore:
Total mass of boxes = 135 boxes * 17472 g per box = 2358720 g
But 1 kg = 1000 g
2358720 g = 2358720 g * 1 kg per 1000 g = 2358.7 kg
The total mass is 2358.7 kg
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How long will it take Ramon to read the entire novel if he continues to read his current rate
Based on the provided information, a. Ramon reads faster and b.it will take Ramon approximately 16.77 hours to read the entire novel if he continues to read at his current rate.
To answer this question, we need to calculate the reading rate of both Skyler and Ramon, and then compare them to see who reads faster. We also need to use Ramon's reading rate to calculate how long it will take him to read the entire novel.
a. To calculate Skyler's reading rate, we can divide the number of pages she has read by the number of hours she has spent reading:
Skyler's reading rate = 145 pages / 5 hours = 29 pages/hour
Similarly, we can calculate Ramon's reading rate:
Ramon's reading rate = 124 pages / 4 hours = 31 pages/hour
Since Ramon's reading rate is higher than Skyler's, Ramon reads faster.
b. To calculate how long it will take Ramon to read the entire novel, we can use his reading rate and the total number of pages in the novel:
Time = Total number of pages / Reading rate
Time = 520 pages / 31 pages/hour = 16.77 hours
So, it will take Ramon approximately 16.77 hours to read the entire novel if he continues to read at his current rate.
In conclusion, Ramon reads faster than Skyler, and it will take him approximately 16.77 hours to read the entire Vigo the Vampire Hunter novel at his current reading rate.
Note: The question is incomplete. The complete question probably is: The new Vigo the Vampire Hunter novel is 520 pages. Skyler has read 145 pages in 5 hours. Ramon has read 124 pages in 4 hours. a. Who reads faster, Skyler or Ramon? b. How long will it take Ramon to read the entire novel if he continues to read at his current rate? Explain.
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The probability of
A video game randomly chooses your car color and type.
getting a
red car is 0.25, and the probability of getting a convertible is 0.40.
Event A = You a get a red car.
Event B = You get a convertible.
A and B are independent events if
• A. The probability of getting a red car or a convertible is 0.10.
• B. The probability of getting a red convertible is 0.
• C. The probability of getting a red convertible is 0.10.
• D. The probability of getting a red car or a convertible is 0.65.
Answer:
The answer is C, as you'd need to multiply the chance of getting a convertible by the chance of getting a red car, or vice versa.
Step-by-step explanation:
Notice in A it says OR, meaning that it can't be both red and a convertible. B would be impossible, and D would be adding and not multiplying, so C would be the answer. 0.40*0.25=0.10
If you were given the choice of between more initial zombies, but a slower growth rate or fewer initial zombies, but a greater growth rate, which would you pick and why? use at least 3 of these words in the answer, initial value, rate of change, exponential growth or exponential decay.
I would chose more initial zombies, but a slower growth rate because when they grow stronger, you get stronger so you have a better chance of survival if their development rate is gradual, giving you time to collect weapons and construct a shelter.
What is growth rate?Growth rate refers to the percentage increase or decrease in a particular variable over a specific period of time. It is commonly used in finance, economics, and business to describe the rate of change of various economic indicators such as gross domestic product (GDP), population, revenue, profit, and so on.
To calculate the growth rate, you need to divide the difference between the final value and the initial value of the variable by the initial value, and then multiply the result by 100 to express it as a percentage. The formula for growth rate is as follows:
Growth rate = ((Final value - Initial value) / Initial value) x 100
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Seth made a small rectangular table for his workroom. The sides of the table are 36" and 18". If
the diagonal of the table measures 43", is the table square? A table which is "square" has right
angles at the corners.
No, the table is not a square.
What is a square?A square is a regular quadrilateral, which means that it has four equal sides and four equal angles. It can also be defined as a rectangle with two equal-length adjacent sides.
Given that, Seth made a small rectangular table having sides 36" and 18", and the diagonal measures 43",
Squares has congruent sides,
But here the sides are 36" and 18"
Hence, the table is not a square.
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Solve for “x” (round your answer to the nearest tenth).
8
8.2
9
16
The value of x in the triangle is 8.2 units
How to determine the value of xFrom the question, we have the following parameters that can be used in our computation:
Angle = 12 degrees
Hypotenuse = x
Length = 8
The length of hypotenuse, x is calculated as
cos(12) = 8/x
Make x the subject of the formula
x = 8/cos(12)
Evaluate the expression
x = 8.2
Hence, the value of x is 8.2 units
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Solve for x provide proofs. Helppp
Answer:
36 degrees
Step-by-step explanation:
since your trying to find x you know that a wright angle is 90 degrees you minus 54 from 90
independent vairable can change what?
An independent variable is a variable that can be changed or manipulated in a scientific experiment.
What is independent variables?Independent variables are variables in an experiment or research study that are independent of other variables, meaning they are unaffected by the other variables in the experiment. Independent variables are often manipulated by the researcher and are used to observe the effect on a dependent variable. Examples of independent variables include the type of treatment, the level of education, the amount of money offered, and the type of incentive.
It is used to determine the effect that the change has on the dependent variable, which is the variable being tested and measured in the experiment. By changing the independent variable, researchers can observe how the change affects the dependent variable. Examples of independent variables include the amount of light, temperature, time, type of material, and other factors that could influence the outcome of the experiment.
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PLEASEEEE HELP ASAP
Solve for x. Round your answer to the nearest tenth.
The value for x is x= [tex]sin^{-1[/tex] (0.5425).
What is Trigonometry?The area of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).
Given:
H= 25
B = 21
Using Pythagoras theorem
P = √H² - B²
P = √25² - 21²
P = √184
P = 2√46
Using Trigonometry
sin x = P / H
sin x = 2√46 / 25
x= [tex]sin^{-1[/tex] (0.5425)
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PLS HURRY! Q3. What is the slope and y-intercept of the linear function?
The slope is ___ and the y-intercept is ____ .
The required slope of the linear function is $30, and the y-intercept is $75.
What is slope-intercept equation of line?When you know the slope of the line to be investigated and the given point is also the y intercept, you can utilize the slope intercept formula, y = mx + b. (0, b). The y value of the y intercept point is denoted by the symbol b in the formula.
According to question:To find the slope of the linear function, we need to calculate the change in cost divided by the change in time.
Change in cost = $285 - $105 = $180
Change in time = 7 - 1 = 6
Slope = Change in cost / Change in time = $180 / 6 = $30
To find the y-intercept, we can use the point-slope form of a linear equation, y = mx + b, where y is the cost, x is the time, m is the slope, and b is the y-intercept.
Using the point (1, $105), we can substitute x = 1 and y = $105 into the equation and solve for b:
$105 = $30(1) + b
b = $105 - $30 = $75
Therefore, the slope of the linear function is $30, and the y-intercept is $75.
The linear function can be written as: y = $30x + $75, where x is the number of months of membership and y is the cost of the membership.
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Alice is willing to spend $30 on a pair of jeans and has a coupon for $10 off she found online. She selects and purchases a $35 pair of jeans, pre-discount. Determine whether this would create a producer or consumer surplus and calculate the ensuing surplus.
Consumer surplus $5 as we solve the Q by given data
Consumer surplus is the difference between the consumer's willingness to pay and the price of the commodity.
Consumer surplus in economics, also called social surplus or consumer surplus, is the difference between the price a consumer pays for a commodity and the price the consumer is willing to pay in exchange for giving it up.
Producer surplus is the difference between the price of a commodity and the lowest price at which a seller is willing to sell it.
Consumer Surplus = Willingness to Pay - Price of the Good.
Item Price = $35 - $10 = $25
$30 - $25 = $5
Producer surplus is the difference between the price of a commodity and the lowest price at which a seller is willing to sell it.
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The graph below shows the cost of college tuition per credit hour at a local community college.
(graph in image)
Write the equation in slope-intercept form for the cost of college tuition in terms of the number of credits. Then, complete the table of values for the function.
y = __x + __
How much money, y, will it cost to take 12 college credits, x?
It will cost $___.
Answer:
y = 350x + 225
It will cost $4425 for 12 credits
Step-by-step explanation:
From the two points shown in the graph, we can write the equation of the line.
(5, 1975), (8, 3025)
slope = m = (y_2 - y_1)/(x_2 - x_1) = (3025 - 1975)/(8 - 5) = 1050/3 = 350
y = mx + b
y = 350x + b
1975 = 350 × 5 + b
b = 225
The equation is
y = 350x + 225
For 12 credits, x = 12.
y = 350 × 12 + 225
y = 4425
Answer: It will cost $4425 for 12 credits