35. The file P13_35.xlsx contains the amount of moneyspent advertising a product (in thousands of dollars) andthe number of units sold (in millions) for eight months.a. Assume that the only factor influencing monthlysales is advertising. Fit the following two curvesto these data: linear (Y 5 a 1 bX) and power(Y 5 aXb). Which equation best fits the data?b. Interpret the best-fitting equation.c. Using the best-fitting equation, predict salesduring a month in which $60,000 is spent onadvertising

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.

3. Determine if the data is linear or exponential and find a function that models the data: -4 -2 0. 2 4 y 0.625 2.5 10 40 160

I just need the d section

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

The percentage of mothers who smoke cigarettes during pregnancy has declined approximately linearly from13.1​% in 1997 to 12.3% in 2004 Predict the percentage in 2015.