Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 2 - Linear and Quadratic Functions - Section 2.5 Inequalities Involving Quadratic Functions - 2.5 Assess Your Understanding - Page 162: 2

Answer

$-2\lt x\leq7$

Work Step by Step

$(-2,7]$ implies all numbers between $-2$ and $7$, excluding $-2$ and including $7$. Therefore, the interval $(-2,7]$ can be expressed in the inequality as: $-2\lt x\leq7$
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