Answer
3,4
Work Step by Step
We consider two possible options, since the value within the absolute value can either be positive or negative:
$$ 7-2x =1 \\ -2x =-6 \\ x =3$$
OR:
$$ 7-2x =-1 \\ -2x=-8 \\ x=4$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - 4.2 Graph Quadratic Functions in Vertex or Intercept Form - 4.2 Exercises - Mixed Review - Page 251: 63
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