Trigonometry (10th Edition)

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

Appendix A - Equations and Inequalities: 99

Answer

$19$ $\geq$ $x$ $\gt$ $-16$ The equivalent interval notation is $(-16, 19]$.

Work Step by Step

$-3$ $\leq$ $\frac{x - 4}{-5}$ $\lt$ $4$ $-3 * -5$ $\geq$ $x - 4$ $\gt$ $4 * -5$ Inequality sign reversed because of multiplication of -5 $15 + 4$ $\geq$ $x$ $\gt$ $-20 + 4$ $19$ $\geq$ $x$ $\gt$ $-16$ The equivalent interval notation is $(-16, 19]$.
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