$$\text { The rational function } f ( x ) = \frac { 120 x } { 100 - x } \text { models the cost, } f ( x ) \text {, in millions of dollars, to remove } x \% \text { of the trash from American }$$ highways. The graph is shown. Use the equation to solve the problem.

-Find and interpret f(80).
A) 48; The cost to remove 80% of the trash is $48 million.
B) 48; The cost to remove 20% of the trash is $48 million.
C) 48; The cost to remove 80% of the trash is $48 .
D) 20; The cost to remove 80% of the trash is $20 million.

Question

$$\text { The rational function } f ( x ) = \frac { 120 x } { 100 - x } \text { models the cost, } f ( x ) \text {, in millions of dollars, to remove } x \% \text { of the trash from American }$$ highways. The graph is shown. Use the equation to solve the problem.

-Find and interpret f(80).
A) 48; The cost to remove 80% of the trash is $48 million. 
B) 48; The cost to remove 20% of the trash is $48 million. 
C) 48; The cost to remove 80% of the trash is $48 . 
D) 20; The cost to remove 80% of the trash is $20 million.

Quizplus · Accepted Answer

The correct interpretation of f(80) = 48 is that it represents the cost to remove 80% of the trash, which is $48 million.

Highways the Graph Is Shown