Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - 3-6 Compound Inequalities - Practice and Problem-Solving Exercises - Page 205: 47

Answer

The spring is stretched between 20 and 32 inches.

Work Step by Step

Write an equation for d. d/F=0.8⟶ multiply each side by F d/F×F=0.8F⟶ multiply d=0.8F Substitute the upper and lower quantities for F to find the range for d. 0.8(25)≤d≤0.8(40)⟶ multiply 20≤d≤32
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