Answer
$128$
Work Step by Step
$\log _{4}x=\dfrac {7}{2}\Rightarrow x=4^{\frac {7}{2}}=\left( 2^{2}\right) ^{\frac {7}{2}}=2^{7}=128$
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: 36
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