Answer
$r = 1$ or $r = -5$
Work Step by Step
$ 4 + abs(r+2) = 7$
$ 4 + abs(r+2) -4 = 7-4$
$abs (r + 2 ) = 3$
$r + 2 = 3$ or $r + 2 = -3$
$r + 2 = 3$
$r + 2 -2 = 3 -2$
$r = 1$
$r + 2 = -3$
$r+2 -2 = -3 -2 $
$r = -5$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 3 - Solving Inequalities - Chapter Review - 3-7 Absolute Value Equations and Inequalities - Page 226: 51
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