The spending multiplier equals 1/marginal propensity to save if an economy:
a. has a trade surplus.
b. is open to international trade.
c. does not trade with any other country.
d. has a higher level of saving than consumption.
e. reduces its investment expenditures to zero.
c
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London drivers who choose to drive in "congestion zones" pay a tax designed to reduce traffic congestion
a. True b. False Indicate whether the statement is true or false
Leontyne Price was earning $1,000 a week in 1940 and $3,000 a week in 1950. If the CPI rose from 100 in 1940 to 300 in 1950, then between 1940 and 1950 Ms. Price's real wages
A. rose substantially. B. rose slightly. C. stayed the same. D. fell slightly. E. fell substantially.
A firm can be the only firm in an industry and still not be a monopoly if
A. the firm is not making economic profits. B. the firm is not large. C. the firm produces a good that is not considered a necessity. D. the firm produces a good similar to a good in another industry.
Refer to the short-run information provided in Figure 8.5 below to answer the question(s) that follow. 
Figure 8.5 Refer to Figure 8.5. If six drones are produced, average variable costs are
A. $2.50. B. $5. C. $10. D. $13.33.