Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The following table shows worldwide sales of a certain type of cell phone and their average selling prices in 2013 and 2017.
Year | 2013 | 2017 |
---|---|---|
Selling Price ($) | 335 | 225 |
Sales (millions) | 1,010 | 2,110 |
1. Use your demand equation to predict sales to the nearest million phones if the price is raised to $385.
2.
Fill in the blank.
For every $1 increase in price, sales of this type of cell phone decrease by _____________ million units.
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