The resale value of a textbook decreases by 25% with each previous owner. A new textbook is sold for $85. Which function represents the resale value of the textbook after x owners?

Answers

Answer 1

Answer: Since the value decreases by 25% each time, the next cost is the current cost times 0.75 (since new cost is 75% of current cost).
To find the value of the book after x times sold, you can use:
$cost = 85(0.75)^x$
Just plug in the number of times it is resold to find the value.

Answer 2

Answer: A exponential function would represent it nicely f(x)=b*a^x
Reason being a decrease of %
a = 1+r
r = -25% = -0.25
And b being what the original cost of the book
f(x)=85*0.75^x
Where f(x) is the price after x amount of previous owners

Related Questions

How many 5/8 -foot pieces of wood can you cut from a board that is 4/5/8 ft long?
Given the system of linear equations: 2x+1/2y=7 6x-1/2y=5 which new equation would be the result of adding the equations together?4x=28x=28x=12y=12
A hot air balloon is flying above Groveburg. To the left side of the balloon, the balloonist measure the angle of depression to the Groveburg soccer fields to be 20° 15'. To the right side of the balloon, the balloonist measures the angle of depression to the high school football field to be 62° 30'. Find the distance from the balloon to the soccer fields
A function is shown in the table.. . . xg(x). −22. −1−3. 02. 117. . . Which of the following statement is a true for this function? The function is increasing from x = −2 to x = −1.. The function is increasing from x = 0 to x = 1.. The function is decreasing from x = −1 to x = 0.. The function is decreasing from x = 0 to x = 1..
A greenhouse that specializes in growing vegetables used for Chinese cooking is divided into sections. The number of plants in each section depends on the number of sprinklers in that section.In a section with y sprinklers there are y(4y − 1) napa cabbage plants and (y + 5)2 bok choy plants. Which simplified expression represents the total number of napa cabbage plants and bok choy plants in a section with y sprinklers? (5 points) A.4y4 − 10y2 + 25 B.4y2 + 9y + 25 C.5y2 − 11y + 25 D.5y2 + 9y + 25

Vince went on a 333 day hiking trip. Each day, he walked 3\4 the distance that he walked the day before. He walked 83.2583, point, 25 kilometers total in the trip.

Answers

Answer:

x= 36 km

Step-by-step explanation:

Vince went on a 3 day hiking trip. Each day, he walked 3/4 the distance that he walked the day before. He walked 83.25 kilometers total in the trip. How far did Vince walk on the 1st day of the trip?

Assume vince walked x km on the first day .

The following equation can be formed

x + 3/4 x + (3/4)^2 x = 83.25

x + 0.75x + 0.5625x = 83.25

Add the like terms

2.3125x = 83.25

Divide both sides by 2.3125

x = 36 km.

Answer:

Step-by-step explanation:

What is the equation of a line, in general form, with a slope of -2 and a y-intercept of 8? What is the slope of a line perpendicular to the line whose equation is y = 2x + 5?

What is the equation of the line, in general form, that passes through the point (1, 1) and has a y-intercept of 2.

Answers

Y = -2x + 8

The slope of the perpendicular line will be: y = -1/2x + 5

If A is to the left of B on a number line, which of the following must be true?A.) A<B
B.) A=B
C.) A>B

Answers

Answer:

A. $A<B$

Step-by-step explanation:

We have been given that A is one the left of B on a number line. We are asked to choose the correct option from our given choices about the given condition.

We know that the value of numbers on number line increases from left to right.

Since A is on the left of B on number line, therefore, the value of a must be less than B and option A is the correct choice.

A.) A <B I hope i could help you.

A hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. How much cleaning solution is required to clean the hallway?

Answers

First, find the area of the hallway.

$Area=length*width$

$A=90*7$

$A=630$

Now you know there are 630 square feet to be cleaned. To find the amount of cleaning solution needed, multiply this number by 1/2.

$Solution=area* (1)/(2)$

$S=630* (1)/(2)$

$S= (630)/(2)$

$S=315$

Answer: 315 fluid ounces

$90*7 = 630ft ^(2) \n \n 1/2 floz ->1 ft^(2) \n \n 630/2=315 \n\n\boxed{315}$