Costco sells paperback books in their retail stores and wants to examine the relationship between the prices and sales. The price of a particular novel was adjusted each week and the weekly sales are in the following table. Management would like to use a simple linear regression model that uses prices to predict sales. Sales 2 Price $ 6 4 $ 14 7 $ 15 3 $ 9 1 $ 17 1 $ 1 5 $ 12 The predicted weekly sales for the novel when priced at $10 is equal to