Answer
$ 4.3979$, see explanations.
Work Step by Step
$log(25000)\approx4.3979$ that is multiplying a number by 10 will result an increase of exactly 1 to its common logarithm value.
$b=10a, log(b)=log(10a)=log(a) + 1$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.4 Evaluation Logarithms and the Change-of-Base Theorem - 4.4 Exercises - Page 457: 44
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