Answer
$9$
Work Step by Step
$x=2^{\log _{2}9}\Rightarrow \log _{2}x=\log _{2}2^{\log _{2}9}\Rightarrow \log _{2}x=\log _{2}9\Rightarrow 2^{x}=2^{9}\Rightarrow x=9$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.3 Logarithmic Functions - 4.3 Exercises - Page 445: 27
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