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 - Exercise Set: 56

Answer

$x=-18$

Work Step by Step

RECALL: $\log_b{x}=y \longrightarrow b^y=x$ Write the equation in exponential form using the rule above to obtain: $2^5=x+50 \\32=x+50$ Solve for $x$ to obtain: $\begin{array}{ccc} &32-50 &= &x+50-50 \\&-18&=&x\end{array}$
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