Answer
Answer (c)
Work Step by Step
$f(x)=20$
This is an equation. It means
$x=f^{-1}(20)$ $\Longrightarrow$ to solve for $x$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 3 - Exponents, Polynomials and Functions - 3.2 Combining Functions - 3.2 Exercises - Page 250: 93
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