Question

Let f(x) compute the cost of a rental car after x days of use at $35 per day. What does f-1(x) compute?The number of days rented for 35 dollars.The cost of a rental for x days.The cost of rental for 35 days.The number of days rented for x dollars.

Answer 1

Inverse functions:

If f takes a to b, the inverse f^-1 takes b to a

Function: y in function of x

Inverse: x in function of y

Then, if the function f(x) computes the cost of a rental car after x days of use, the inverse f^-1(x) computes the days rented for x dollars.