Trey C.

# For his services, a private investigator requires a $450 retainer fee plus$100 per hour.

Let x represent the number of hours the investigator spends working on a case.
(a) Find a function f that models the investigator's fee as a function of x.
f(x) =

(b) Find
f ^−1.

f ^−1(x) =

Lauren H.

I forgot all my calc, but, here's the beginning:
f(x) = 100x + 450
Report

10/07/18

By:

Tutor
5 (24)

Precalculus teacher

Lauren H.

Thanks for that explanation Stephen.  It helps me recapture so much lost math to read other people's solutions.
Report

10/07/18

## Still looking for help? Get the right answer, fast.

Get a free answer to a quick problem.
Most questions answered within 4 hours.

#### OR

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.