Answer
-10
Work Step by Step
Isolating x on one side of the equation, we find:
$$.5x=-5 \\ x=-10$$
Checking:
$$ .7(-10) +3 = .2(-10)-2 \\ -4=-4$$
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 - 4.1 Graph Quadratic Functions in Standard Form - 4.1 Exercises - Mixed Review - Page 243: 66
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