College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Section 4.3 - Logarithmic Functions - 4.3 Exercises - Page 388: 39


(a) $x=-2$ (b) $x=32$

Work Step by Step

(a) We are given: $\log_{7}(\frac{1}{49})=x$ This means: $7^{x}=\frac{1}{49}$ Therefore: $x=-2$ (b) We are given: $\log_{2}x=5$ This means: $2^{5}=x$ Therefore: $x=32$
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