A camera rental company charges a fixed amount plus a fee based on the number of days for which the camera is rented. The graph below shows the amount paid for a different number of days to rent the camera:

A graph titled Camera Rentals plots the Number of Days on the x axis and the Amount in dollars on the y axis. A straight line joins the ordered pairs 0, 40 and 4, 120.

What is the fixed amount charged?

$20

$30

$40

$80

Question

Mathematics

Adonis

28 January, 07:54

A camera rental company charges a fixed amount plus a fee based on the number of days for which the camera is rented. The graph below shows the amount paid for a different number of days to rent the camera:

A graph titled Camera Rentals plots the Number of Days on the x axis and the Amount in dollars on the y axis. A straight line joins the ordered pairs 0, 40 and 4, 120.

What is the fixed amount charged?

$20

$30

$40

$80

+2

Answers (1)

Know the Answer?

Annabel Villa · Answer 1

Given:

x y

0 40

4 120

y = fixed amount + v (x)

y = 40 + v (0)

y = 40

y = 40 + v (x)

120 = 40 + v (4)

120 - 40 = v (4)

80 = v (4)

80/4 = v

20 = v

y = 40 + 20x

The fixed amount charged is 40.

The variable amount is 20 per day.