Answer
$7.8137$
Work Step by Step
Using properties of logarithm:
$$\log_b 225=\log_b (9\cdot5\cdot5)=\log_b 9+\log_b 5+\log_b 5=$$
$$=3.1699+2.3219+2.3219=7.8137$$
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: 10
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