Finite Math and Applied Calculus (6th Edition)

by Waner, Stefan; Costenoble, Steven

Published by Brooks Cole

ISBN 10: 1133607705

ISBN 13: 978-1-13360-770-0

Chapter 1 - Section 1.3 - Linear Functions and Models - Exercises - Page 92: 86b

Answer

10 (dollar); 39

Work Step by Step

For every 10 (dollar) increase in price, sales of smart phones decrease by 39 units. Because $162-152=10$ and $213-174=39$

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