Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.5 Evaluating Expressions and Formulas - 9.5 Exercises: 23

Answer

-5

Work Step by Step

-4x - y =-4(5) – (-15) (x is 5, y is -15) = - (20) + 15 (Change subtraction to addition (-15) to 15) = -20 + 15 = -5
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