Answer
97
Work Step by Step
$\frac{87+92+84+x}{4}=90$
87+92+84+x = 360
x = 360 - 263 = 97
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.3 - Modeling with Linear Equations - 1.3 Exercises - Page 98: 43
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