Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 10 - Radical Expressions and Equations - 10-5 Graphing Square Root Functions - Practice and Problem-Solving Exercises - Page 642: 13



Work Step by Step

$18-x$ must be greater than or equal to 0 because a negative number does not have a square root. $18-x\geq0$ Simplify to get $-x\geq-18$ Divide both sides by -1 to get: $x\leq18$
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