Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.7 - Linear Inequalities in One Variable - 1.7 Exercises - Page 139: 101a


It was during the years of 2005 and 2006.

Work Step by Step

$30\leq W\leq32$ $30\leq 0.903t+26.08\leq32$ $30-26.08\leq 0.903t+26.08-26.08\leq32-26.08$ $3.92\leq 0.903t\leq5.92$ $\frac{3.92}{0.903}\leq\frac{0.903t}{0.903}\leq\frac{5.92}{0.903}$ $4.341\leq t\leq6.556$ So, the solutions are: $t=5$ and $t=6$. It corresponds to the years 2005 and 2006.
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