Precalculus: Mathematics for Calculus, 7th Edition

by Stewart, James; Redlin, Lothar; Watson, Saleem

Published by Brooks Cole

ISBN 10: 1305071751

ISBN 13: 978-1-30507-175-9

Chapter 1 - Section 1.7 - Modeling with Equations - 1.7 Exercises - Page 75: 30

Answer

$32,500

Work Step by Step

His salary is the x that we have to calculate and we know that her salary is 15% higher (1.15x) and together they make $69,875 per year. x+1.15x=69,875 2.15x=69,875 x=32,500

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