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Question
Costco sells paperback books in their retail stores and wanted to examine the relationship between price and demand. The price of a particular novel was adjusted each week and the weekly sales were recorded in the table below.| Sales | Price |
| 8 | $12 |
| 4 | $11 |
| 5 | $10 |
| 9 | $9 |
| 8 | $8 |
| 8 | $7 |
| 7 | $6 |
Answer
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