Please help with this problem

b) Using technology, find the correlation (value of r) AND the equation of the regression line (best fit line) between the annual advertising costs and the annual revenue from the given data. c) Give the units of the slope of your regression line (best fit line). d) Give the meaning of the slope value of your line from part b in terms of annual advertising costs and the annual revenue. (What does the number you have for slope tell us about how these variables change?) e) What percent of the observed variation in the annual revenue can be explained by the linear model?\f