Answer
A
Work Step by Step
We solve the equation for $b_1$:
$$ 2A = (b_1+b_2)h \\ \frac{2A}{h} =b_1+b_2 \\b_1= \frac{2A}{h} -b_2 $$
Option A is correct.
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 1, Equations and Inequalities - 1.4 Rewrite Formulas and Equations - 1.4 Exercises - Skill Practice - Page 30: 6
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