Intermediate Algebra: Connecting Concepts through Application

by Clark, Mark; Anfinson, Cynthia

Published by Brooks Cole

ISBN 10: 0-53449-636-9

ISBN 13: 978-0-53449-636-4

Chapter 6 - Logarithmic Functions - 6.5 Solving Exponential Equations - 6.5 Exercises - Page 526: 2

Answer

$x\approx2.816$

Work Step by Step

Take the log of both sides, and then use the power property. $7^x=240$ $x\log7=\log240$ $x=\frac{\log240}{\log7}$ $x\approx2.816$

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