The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 0 3 -20+ 210- 200- 90- 80- 70- 60- 50 40- 30- 20- 10- 100- 90 80+ 6 9 12 15 Let y be the retail sales in billions of dollars in a years since 1995. A linear model for the data is Y = 9.44x + 84.182. OF ✓ 85.851 108.426 141.781 169.256 202.297 222.266 3 6 9 12 Use the above scatter plot to decide whether the linear model fits the data well. The function is not a good model for the data The function is a good model for the data. Estimate the retails sales in the U. S. in 2011. billions of dollars. Use the model to predict the year in which retails sales will be $239 billion.
The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 0 3 -20+ 210- 200- 90- 80- 70- 60- 50 40- 30- 20- 10- 100- 90 80+ 6 9 12 15 Let y be the retail sales in billions of dollars in a years since 1995. A linear model for the data is Y = 9.44x + 84.182. OF ✓ 85.851 108.426 141.781 169.256 202.297 222.266 3 6 9 12 Use the above scatter plot to decide whether the linear model fits the data well. The function is not a good model for the data The function is a good model for the data. Estimate the retails sales in the U. S. in 2011. billions of dollars. Use the model to predict the year in which retails sales will be $239 billion.
Chapter4: Linear Functions
Section: Chapter Questions
Problem 8PT: Does Table 1 represent a linear function? If so, finda linear equation that models the data.
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