Answer
-26
Work Step by Step
Replace r with -3. Replace s with -5. 2(-3) + 4(-5) Using the order of operations, do all multiplications first. Then addition. = (-6) + (-20) Now, change addition to subtraction. =-6-20 = -26
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
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 - Page 662: 8
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