College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 1 - Section 1.5 - Solving Inequalities - 1.5 Assess Your Understanding - Page 128: 108

Answer

$1600\leq20T\leq2400$

Work Step by Step

By the text $V=20T$ and $80\leq T\leq120$, thus $20\cdot80\leq20T\leq20\cdot120\\1600\leq20T\leq2400$
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