Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Appendix A - Equations and Inequalities: 97

Answer

$-9$ $\leq$ $x$ $\leq$ $9$ The equivalent interval notation is $[-9, 9]$.

Work Step by Step

$-4$ $\leq$ $\frac{x + 1}{2}$ $\leq$ $5$ $-4 * 2$ $\leq$ $x + 1$ $\leq$ $5 * 2$ $-8 - 1$ $\leq$ $x$ $\leq$ $10 - 1$ $-9$ $\leq$ $x$ $\leq$ $9$ The equivalent interval notation is $[-9, 9]$.
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