Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Chapter 1 - Functions and Limits - 1.1 Four Ways to Represent a Function - 1.1 Exercises - Page 20: 19

Answer

The following is a sketch of the amount of a particular brand of coffee sold by a store as a function of the price of the coffee:
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Work Step by Step

The amount of coffee sold is represented in the y-axis of the graph, whereas the price of the coffee is represented in the x-axis. At a low price (ie. x-value), the amount of coffee sold is high (y-value). As the price increases, the amount of coffee sold decreases. The amount of coffee sold tends to zero as the price increases. The x-value is always positive since there cannot be a negative price. The y-value is always either positive or zero since there cannot be a negative amount sold.
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