Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 3 - Section 3.4 - Exponential and Logarithmic Equations - Concept and Vocabulary Check - Page 488: 3

Answer

$\displaystyle \frac{\ln 20}{\ln 9}$

Work Step by Step

$\ln 9$ and $ \ln 20$ are real numbers. To isolate x, divide the equation with $\ln 9$. Result:$\displaystyle \quad x=\frac{\ln 20}{\ln 9}$
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