## Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley

# Chapter 5 - Logarithmic Functions - Exercises to Skills for Chapter 5 - Page 232: 9

#### Answer

$-4=\log(0.0001)$

#### Work Step by Step

Since $\log(10^a)=a$, the equation can be simplified to $$\log 10^{-4}=\log 0.0001$$ $$-4=\log 0.0001$$

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