Precalculus (6th Edition) Blitzer

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

Chapter 1 - Section 1.10 - Modeling with Functions - Exercise Set - Page 292: 9


a. $40000-500x$ b. $40000x-500x^2$

Work Step by Step

a. We can express the relation between the number of spectators and the ticket price as $N(x)=30000-500(x-20)=40000-500x$ so that $N(20)=30000$ and $N$ decreases by $500$ for every dollar increase in price. b. The revenue can be expressed as $R=Nx=40000x-500x^2$
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