Answer
$f(16)=8$
$f^{-1}(3)=81$
Work Step by Step
We find $f(16)=12-\sqrt{16}=8$.
If $3=12-\sqrt{x}$, then $\sqrt{x}=9$, so $x=81$. Thus, $f^{-1}(3)=81$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 2 - Functions - Review Exercises and Problems for Chapter Two - Page 110: 45
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