The introduction of an overnight delivery service that guarantees the delivery of packages anywhere in the world overnight would increase:
A. the unemployment rate.
B. the share of population employed.
C. the labor force participation rate.
D. average labor productivity.
Answer: D
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If this is a closed economy how many cars will be exchanged? 
A. 80,000 B. 20,000 C. 60,000 D. 40,000
Total expenditure equals total income
A) if firms do not save for future investment.
B) if firms earn zero profit.
C) because firms pay out everything they receive as income to the factors of production.
D) only if net taxes equals government expenditures on goods and services.
E) only if firms sell all the goods they produce in a given time period.
If the government adopts an expansionary fiscal policy that requires more government borrowing in the money market, then interest rates are likely to:
A. rise and partially offset the effects of the fiscal policy. B. rise and partially reinforce the effects of the fiscal policy. C. fall and partially offset the effects of the fiscal policy. D. fall and partially reinforce the effects of the fiscal policy.
In the above figure, what is the profit at the profit-maximizing output level?
A. $20 B. $10 C. $70 D. $2