#### Answer

$128$

#### Work Step by Step

$\log _{4}x=\dfrac {7}{2}\Rightarrow x=4^{\frac {7}{2}}=\left( 2^{2}\right) ^{\frac {7}{2}}=2^{7}=128$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$128$

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