Answer
$12$
Work Step by Step
$$f(x)=4^x$$
Substitute $x=\log_4 12$:
$$f(\log_4 12)=4^{\log_4 12}$$
Using property of logarithm:
$$4^{\log_4 12}=12^{\log_4 4}=12^1=12$$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter 4 - Quiz - Sections 4.1-4.4 - Page 439: 12
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