Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 6 - Logarithmic Functions - 6.3 Graphing Logarithmic Functions - 6.3 Exercises - Page 511: 8


$\text{a) } f(5)\approx-5.5 \\\text{b) } x\approx3$

Work Step by Step

$\bf{\text{Solution Outline:}}$ Use the information in the given graph. $\bf{\text{Solution Details:}}$ To estimate $ f(5) ,$ find the value of $y$ when $x= 5 .$ Based on the graph, then $ f(5)\approx-5.5 .$ To estimate $ f(x)=-4 ,$ find the value of $x$ when $y= -4 .$ Based on the graph, $ x\approx3 .$ The answers are \begin{array}{l}\require{cancel} \text{a) } f(5)\approx-5.5 \\\text{b) } x\approx3 .\end{array}
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