Sales The table shows the sales S (in millions of dollars)
Chapter 2, Problem 2.8.16(choose chapter or problem)
Sales The table shows the sales S (in millions of dollars) for jogging and running shoes from 1998 to 2004. (Source: National Sporting Goods Association) (a) Use a graphing utility to create a scatter plot of the data. Let t represent the year, with corresponding to 1998. (b) Use the regression feature of a graphing utility to find a quadratic model for the data. (c) Use a graphing utility to graph the model with the scatter plot from part (a). (d) Use the model to find when sales of jogging and running shoes will exceed 2 billion dollars. (e) Is this a good model for predicting future sales? Explain.
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