Based on this regression equation, if they increased the number of ads for the basic carwash by 20, what would be expected change in sales? (Round your answer up or down to nearest whole number.) Question 12 What would be the R2 of this equation? (round to 2 decimals) Question 13 What would be the forecast for the number of basic carwashes if the price were $10.60 and there were 95 radio ads? Question 14 What would be the forecast for the number of basic carwashes if the price were $10.25 and there were 120 radio ads? Use for the following 7 questions: 7 Vesper Auto Wash is reviewing its sales for the last 9 months. Executives at Vesper are in disagreement over the driving force behind sales of their basic carwash package. Some arguc it is the price of a carwash, while others argue it is the number of ads on the radio. The data for the monthly sales of basic carwashes, the corresponding price, and the number of monthly radio ads are presented below. Ads 61 73 84 Sales 7,006 7,234 7,692 7.486 7,526 8,012 8,121 7.924 8.131 Price 10.7 10.46 10.21 10.51 10.26 10.12 10.01 78 82 96 104 100 10.11 9.99 109 What would be the linear regression equation for examining the relationship among sales, price, and the number of radio waves? Sales - 8,763.2 + 123.78 x Price +20.23 x Ads Sales = 8,763.2 - 123.78 x Price + 20.23 * Ads Sales = 9,406.6 - 336.94 x Price - 19.82 x Ads Sales = 9,406.6 19.82 x Price + 336.94 x Ads Question ? 1 pts What would be the correlation coefficient of this equation? Question 10 0.5 pts Based on this regression equation, if they drop the price for the basic carwash by $0.20, what would be expected change in sales? (Round your answer up or down to nearest whole number.)