Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 9 - Chapter 9 Test - Page 640: 17

Answer

The value of $\log_2 32$ is $\underline{5}$. This means that if we raise $\underline{2}$ to the $\underline{5^{th}}$ power, the result is $\underline{32}$.

Work Step by Step

Using the properties of logarithms, the given expression, $ \log_2 32 ,$ is equivalent to \begin{align*}\require{cancel} & \log_2 2^5 \\&= 5\log_2 2 &(\text{use }\log_b x^y=y\log_b x) \\&= 5(1) &(\text{use }\log_b b=1) \\&= 5 .\end{align*} Hence, "The value of $\log_2 32$ is $\underline{5}$. This means that if we raise $\underline{2}$ to the $\underline{5^{th}}$ power, the result is $\underline{32}$.
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