Assume the aggregate demand and supply for a good are given by the following expressions: (2%) = 18 - p and 0503) = 219 - 3 A) Solve for the competitive equilibrium price (pa) and quantity (0\"). B) Suppose the government imposes a per-unit tax (1') on each unit of the good produced. If the new equilibrium quantity with the tax is Q = 7, what must 1' equal