Answer
$\log_b{625}=4$
Work Step by Step
RECALL:
$b^y=x \longrightarrow \log_b{x} =y$
Use the rule above with $y=4$, and $x=625$ to obtain:
$\log_b{625}=4$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 9 - Review Exercises - Page 750: 28
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