Which of the following are two major sources of international law?
a. common law and natural law
b. ethical principles and mutual expectations
c. international conventions and international custom
d. state legislatures and the international legislature
c. international conventions and international custom
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A year ago a country reduced the tax rate on all interest income from 40% to 10%. During the year private saving was $600 billion as compared to $500 billion the year before the tax reform. Taxes collected on interest income fell by $150 billion. Assuming no other changes in government revenues or spending which of the following is correct?
a. the substitution effect was larger than the income effect; national saving rose b. the substitution effect was larger than the income effect; national saving fell c. the income effect was larger than the substitution effect; national saving rose d. the income effect was larger than the substitution effect; national saving fell
The change in the consumption of one good that just offsets a one-unit change in the consumption of another good is the
A. marginal rate of satisfaction. B. marginal utility. C. marginal rate of consumption. D. marginal rate of substitution.
Refer to the information provided in Figure 9.1 below to answer the question(s) that follow. 
Figure 9.1Refer to Figure 9.1. If this farmer maximizes profits, his revenue per bushel will be
A. $7. B. $9. C. $11. D. $15.
Refer to the information provided in Figure 13.2 below to answer the question(s) that follow. 
Figure 13.2 Refer to Figure 13.2. This firm's total revenue will be maximized at a price of
A. $8. B. $6. C. $5. D. $4.