Answer
$23$
Work Step by Step
RECALL:
$b^{\log_b{x}} =x.$
Thus, using the rule above gives
$7^{\log_{7}{23}} = 23.$
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 3.2 - Exponential Functions - Exercise Set - Page 463: 42
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