简答题\n The supply curve for motor oil is the typical upward-sloping straight line, and the demand curve for motor oil is the typical downward-sloping straight line. When motor oil is taxed, the area on the relevant supply-and-demand graph that represents the deadweight loss is ( ). A、larger than the area that represents consumer surplus in the absence of the tax B、larger than the area that represents government’s tax revenue C、a triangle D、All of the above are correct\n简答题\n The Laffer curve relates ( ). A、the tax rate to tax revenue raised by the tax B、the tax rate to the deadweight loss of the tax C、the price elasticity of supply to the deadweight loss of the tax D、government welfare payments to the birth rate\n简答题\n Which of the following quantities decrease in response to a tax on a good? A、the equilibrium quantity in the market for the good, the effective price of the good paid by buyers, and consumer surplus B、the equilibrium quantity in the market for the good, producer surplus, and the well-being of buyers of the good C、the effective price received by sellers of the good, the wedge between the effective price paid by buyers and the effective price received by sellers, and consumer surplus D、None of the above is necessarily correct unless we know whether the tax is levied on buyers or on sellers\n简答题\n Refer to Figure 8-1. Suppose the government imposes a tax of P' - P'''. Total surplus after the tax is measured by the area ( ). A、I+Y B、J+K+L+M C、I+Y+B D、I+J+K+L+M+Y\n简答题\n Suppose a tax of 3,000 and decreases producer surplus by 200 B、600 D、$1,200\n