Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 3 - Solving Inequalities - 3-7 Absolute Value Equations and Inequalities - Practice and Problem-Solving Exercises - Page 211: 45

Answer

$-11 \leq f \leq 2$
1524802029

Work Step by Step

$abs(2f + 9) \leq 13$ $-13 \leq 2f + 9 \leq 13$ $-13 -9 \leq 2f + 9 - 9 \leq 13 - 9$ $-22 \leq 2f \leq 4 $ $-22 *(1/2)\leq 2f *(1/2)\leq 4*(1/2) $ $-11 \leq f \leq 2$
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