Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 10 - Exponents and Radicals - 10.1 Radical Expressions and Functions - 10.1 Exercise Set: 94

Answer

$[-8, \infty)$

Work Step by Step

$\bf{\text{Solution Outline:}}$ The domain of the given function, $ g(x)=\sqrt{x+8} ,$ is the permissible values of $x.$ $\bf{\text{Solution Details:}}$ With an even index (index equals $ 2 $), then the radicand should be a nonnegative number. Hence, \begin{array}{l}\require{cancel} x+8\ge0 \\\\ x\ge-8 .\end{array} Hence, the domain is the interval $ [-8, \infty) .$
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