1. Estimate a regression line using sales as dependent variable and TV advertising spending and radio advertising spending as independent variables.
2. Clearly interpret the estimated coefficients of your regression line and discuss the effect of each independent variable on sales in 4 lines.
3. Use expected spending on TV advertising and on radio advertising in 2017 and 2018 to predict sales in these two years and interpret the results.

Compare predicted sales in 2017 with sales in 2018. Please explain whether this reallocation of advertising spending will have positive effect on sales and why?

Year	Sales($)	TV AD($)	Radio AD($)		Sales($) = Sales
2007	4,000,000	6,000	4,000		TV AD($) = TV Advertising Spending
2008	4,400,000	10,000	4,000		Radio AD($)= Radio Advertising Spending
2009	4,600,000	12,000	5,000
2010	4,800,000	14,000	7,000
2011	5,200,000	16,000	9,000
2012	5,800,000	18,000	12,000
2013	6,000,000	22,000	14,000
2014	6,800,000	24,000	20,000
2015	7,400,000	26,000	21,000
2016	8,000,000	32,000	24,000
2017		42,000	20,000
2018		30,000	31,000