Edward operates a pizza shop, selling local-avoured pizzas. The demand function is given as: Qx = 4000 - 1000Px + 25Y Where: Q): = quantity of pizza demanded, Px = price of pizza ($35) and Y = average consumer's income {$1500} a. Formulate the demand curve function for pizza (express price as a function of quantity) and calculate the quantity demanded for pizza. (4) b. Compute the difference in the total revenue that can be earned at the current price and at $20.75. At which price is total revenue the highest and what should the rm do? (6)