Use linear regression on your calculator to find the equation of the linear function that best fits this data. x 1 2 3 4 5 6 y 71 86 112 124 147 150    Hint: Write your final answer as an equation in the form y=mx+by=mx+b. Round all numbers to 2 decimal places.

The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. 220- 210 200 190 180 170 160 150 Year 0 130- 120- 110- 100- 90 801 6 12 15 Let S(t) be the retails sales in billions of dollars in t years since 1995. A linear model for the data is F(t) = 9.44t + 84.182. Retail Sales 85.851 108.426 141.781 169.256 202.297 222.266 3 6 9 12 15 Use the above scatter plot to decide whether the linear model fits the data well. The function is a good model for the data. The function is not a good model for the data Estimate the retails sales in the U. S. in 2015. billions of dollars.

Suppose that the number of tee shirts sold (N) depends linearly on the price charged (x). Write an equation showing this dependence.