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: 6

Answer

6

Work Step by Step

2r + 4s Replace r with 7. Replace s with -2. 2(7) + 4(-2) Using the order of operations, do all multiplications first. Then addition. = 14 + (-8) Now, change addition to subtraction. =14-8 = 6
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