Can someone show me how to do this problem? steps with explanations please

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Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may be related to the number of television appearances by the popular group Maroon 5 during the previous month. Gershon has collected the data shown in the following table: 3 5 7 5 8 5 Maroon 5 TV Appearances Demand for Guitars 3 6 7 4 11 8 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 performed 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 (2) 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)