Answer
$7$
Work Step by Step
We know that $a^{\log_a {x}}=x$.
Hence, $2^{\log_2 {7}}=7$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 5 - Exponential and Logarithmic Functions - 5.5 Properties of Logarithms - 5.5 Assess Your Understanding - Page 305: 17
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