Demand: QD=5021P AND Supply: QS=820+81P a. Calculate the equilibrium price and quantity. b. Graph the supply and demand curves. Label your graph and show all critical points. c. Find the price elasticity of demand at the equilibrium found in "a". Is the demand elastic / inelastic, etc.? Explain. d. Suppose the cross price elasticity of demand of good X for good Y (another good) is equal to -1.5 What can be conclude from this numeric measure? "Price Floor" Assume the government set a price floor at $92. e. Find the surplus due to this price floor (PF). f. Find the consumer expenditure on this good given the price floor. g. Find total revenue received by sellers given the price floor "Price Ceiling" Due to lobbying pressure, the government sets a price ceiling that results in a shortage of 25 units. h. Find the price ceiling level