Shakespears Pizza sells 1,000 large Vegi Pizzas per week for $14 a pizza. When the owner offers a $5 discount, the weekly sales increase to 1,500. (a)Assume a linear relation between the weekly sales A(x) and the discount x. Find A(x). (b)Find the value of x that maximizes the weekly revenue. (c) Answer parts (a) and (b) if the price of one pizza is $7 and all other data are unchanged. (a) A(X) = (b) x = $ (Type an integer or decimal rounded to two decimal places as needed.) (c) A(X) = X = $