Economics is the study of
a. how the human race differs from other species
b. how individuals amass personal fortunes in the stock market
c. how individuals and nations deal with the problem of scarcity
d. role that money plays in the economy
e. how goods and services are distributed throughout the world
C
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The labor demand curve of a purely competitive seller
A. slopes downward because of diminishing marginal utility. B. slopes downward because the elasticity of demand is always less than unity. C. is perfectly elastic at the going wage rate. D. slopes downward because of diminishing marginal productivity.
If all inputs are increased by 5 percent and output increases by 8 percent, then the
A) firm experiences constant returns to scale. B) long-run average cost curve slopes downward. C) long-run average cost curve shifts downward. D) firm experiences diseconomies of scale.
The law of demand assumes that as the price of a good increases,
a. people recognize that its price may be even higher in the future, so they buy now rather than later b. consumers tend to shift their purchases to relatively cheaper substitutes c. people will buy less of it in the hope that the good will be cheaper in the future d. the consumer's money income increases, and he or she is less able to buy all goods, including the good whose price has increased e. the consumer's money income decreases, and if the product is a normal good, more will be purchased
To derive the marginal physical product of capital,
a. all other resources must be held fixed b. capital must be held fixed c. all resources, including capital, must be held fixed d. all resources are variable e. output must be held fixed