This exercise contains only parts b,c, and d. b) Using the least-squares regression method, the equation for forecasting is (round your responses to four decimal places): y=+x c) The estimate for guitar sales if Maroon 5 pertormed on TV 9 times = sales (round your response to two decimal places). d) The correlation coefficient (r) for this model = (round your response to four decimal places). The coefficient of determination (r2) for this model = (round your response to four decimal places). The percentage of variation in sales that can be explained by TV appearances = \% (round your response to two decimal places)