Answer
You must work 9 hours.
Work Step by Step
We first write an equation representing this word problem. We then solve the equation to find:
$$ 250 = (25)(7.75) + 6.25 x \\ 250 = 193.75 + 6.25 x \\56.25 = 6.25 x \\ x =9$$
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 - 1.3 Solve Linear Equations - 1.3 Exercises - Problem Solving - Page 23: 71
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