Algebra and Trigonometry 10th Edition

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: 44


Least score required on the fourth test: $187$

Work Step by Step

Maximum score I can get: $3\times100+200=500$ To get an A: $90$% of $500$ $0.9\times500=450$ My scores on the first three tests: $87,92,84$ Total: $87+92+84=263$ Least score required on the fourth test: $450-263=187$
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