Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 9 - Section 9.5 - Exponential and Logarithmic Equations - Exercise Set: 64

Answer

$x \approx 3.39$

Work Step by Step

RECALL: $\ln{x}= y \longrightarrow e^y=x$ Use the rule above to obtain: $e^{1}=\sqrt{x+4}$ Square both sides of teh equation to obtain: $e^2=x+4$ Subtract $4$ on both sides of the equation to obtain: $e^2-4=x$ Use a calculator to obtain: $x=3.389056099 \\x \approx 3.39$
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