Answer
At least $12.5$ hours, assuming no taxes or other deductions.
Work Step by Step
Gas station weekly income: $\$8.75 \times30 = \$262.5$
$\$400 - \$262.5 = \$137.5$
$\$137.5 \div \$11 = 12.5$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 1 - Solving Linear Equations - 1.2 - Solving Multi-Step Equations - Exercises - Page 17: 35
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