Q7. The demand for Joy's new high-alcohol content beer has enjoyed rapid growth recently. From the analysis of Joy's various outlets, it was found that the demand curve follows this pattern: Q = 150 - 200 P, - 100 Pc + 10 T - 150 Ac + 250 AJ where Q = the number of beers served per week PJ = the price of Joy's new high-alcohol content beer Pc = Average price of the competition T = Average outdoor temperature (measured in ya-ba-da-ba-doo degrees) Ac = Monthly Advertising expenditures (in units) by the competition AJ = Monthly Advertising expenditures (in units) by Joy's outlets Currently P, = 7.00, Pc = 6.00, T = 35, Ac = 10, and Aj 20. (a) Should Pj be increased or decreased to maximize revenue? How do you know? (b) Calculate the elasticity of demand for Joy's beer with respect to Pc, T, and Ac. (c) Calculate the price range over which the demand for Joy's beer is price elastic.