Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may be related to the numbor of television appearances by the popula group Maroon 5 during the previous month. Gershon has collected the dats shown in the following table: This exercise contains only parts b, c, and d b) Using the ieast-squares regression mothod, the equation for forecasting is (round your responses to four decimal places) Y=