The principle of increasing marginal opportunity cost holds in which of the following cases?
A. The production possibility curve is a downward-sloping straight line.
B. Some inputs are better for producing particular goods.
C. Each input can be used to produce only one good.
D. All inputs are equally useful in the production of all goods.
Answer: B
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Which of the following offers the best example of an external cost?
a. The opportunity cost of money that an entrepreneur has invested in her business b. The payments to owners of labor resources and coal inputs used by a coal-burning electric generating facility c. The price paid by households for electricity service, including both the electricity itself and the cost of transporting the electricity through power lines d. The harms to private property, open-access resources, and human health caused by pollution byproducts of electricity production
Based on the figure below. Starting from long-run equilibrium at point C, a tax cut that increases aggregate demand from AD to AD1 will lead to a short-run equilibrium at point ________ and eventually to a long-run equilibrium at point ________, if left to self-correcting tendencies. 
A. D; C B. B; C C. B; A D. D; B
Answer the question on the basis of the following data. All figures are in billions of dollars. Proprietor's Income 20 Compensation of Employees 300 Consumption of Fixed Capital 15 Gross Investment 80 Rents 10 Interests 20 Exports 30 Imports 50 Corporate Profits 25 Taxes on Production and Imports 5 Net Foreign Factor Income 0 Statistical Discrepancy 0 Refer to the above data. National income is:
a) $395. b) $380. c) $375. d) $360.
If a hurricane were to wipe out the majority of the eastern seaboard in the United States:
A. neither the short-run nor long-run aggregate supply curves would be affected. B. only the long-run aggregate supply curve would shift left. C. only the short-run aggregate supply curve would shift left. D. the long-run and short-run aggregate supply curves would both shift left.