Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Review Exercises - Page 144: 142

Answer

year $2020$

Work Step by Step

Step 1. Assume the number of years after 1980 is $x$; we have the ticket price as $p=2.69+0.17x$. Step 2. Letting $p=9.49$, we have $2.69+0.17x=9.49$, $0.17x=6.8$ and $x=40$ years. Step 3. We conclude the year is $1980+40=2020$.
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