Answer
$29$
Work Step by Step
$f(x)=3^{x}$ and $f^{-1}(x)=\log_{3}x$ are inverse functions, so
$f[f^{-1}(x)]=x$
Here,
$f[f^{-1}(29)]=29$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 12 - Exponential Functions and Logarithmic Functions - 12.3 Logarithmic Functions - 12.3 Exercise Set - Page 803: 37
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