Following is a firm's expansion path. The price of capital is $5 per unit; the price of labor is $2 per unit. 
How much does the 10th unit of output add to long-run total cost?
A. $3
B. $40
C. zero
D. $4
E. none of the above
Answer: D
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In the U.S. economy, corporations account for about 18 percent of the firms and about 82 percent of the total sales revenue.
Answer the following statement true (T) or false (F)
Starting from long-run equilibrium, the long-run impact of an increase in autonomous investment, compared to the original equilibrium, is:
A. higher inflation and the same output. B. lower inflation and lower output. C. higher inflation and higher output. D. lower inflation and the same output.
One In the News article titled, "News Release: Disposable Income and Outlays: February 2017" says that personal income increased $44 billion, or 0.31 percent, in February 2017, and consumers are likely to spend more if
A. Interest rates increase. B. Taxes increase. C. Saving increases. D. Income increases.
Fiat money refers to a monetary system in which gold backs up paper money.
Answer the following statement true (T) or false (F)