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Modeling with data annual retail sales in the united states

Question: MODELING WITH DATA Annual retail sales in the United States from 1990 through the year 2000 (in billions of dollars) are given in the following table:

a. Let t 0 correspond to 1990 and use QuadReg to find a second-degree polynomial regression model based on the given data.

b. Plot the graph of the function found in part (a) in the viewing window [0, 10] × [0, 1000].

c. What were the annual retail sales in the United States in 1999 (t = 9)?

d. Approximately how fast were the retail sales changing in 1999 (t = 9)?

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Mathematics: Modeling with data annual retail sales in the united states

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