Answer
$4x-1$
Work Step by Step
RECALL:
If $a^x=a^y$, then $x=y$
Thus,
If $2^{4x-1}=2^7$, then $\underline{4x-1}=7$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 3 - Section 3.4 - Exponential and Logarithmic Equations - Concept and Vocabulary Check - Page 488: 2
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