Which of the following is TRUE about species in the world?
A. No species has ever become extinct.
B. Most extinct species became extinct within the past 30 years.
C. The majority of extinct species became extinct before humans appeared.
D. Extinct species became extinct only after human appeared.
Answer: C
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A steady-state equilibrium refers to:
A) an equilibrium in which the stock of physical capital remains constant over time. B) an equilibrium in which the inequality remains constant over time. C) an equilibrium in which the GDP per capita remains constant over time. D) an equilibrium in which the poverty rate remains constant over time.
Part of the spending on the Doyle Drive project in northern California came from the American Reinvestment and Recovery Act, which is an example of discretionary fiscal policy aimed at increasing
A) tax revenues and the federal budget surplus. B) the money supply and money demand. C) disposable income and interest rates. D) real GDP and employment.
Suppose a perfectly competitive firm is producing 1,000 units of output and the marginal cost of the 1,000th unit is $7. If the firm can sell each unit of output for $7 and the firm's revenue is sufficient to cover its variable cost, the firm should:
A. leave production unchanged. B. decrease production to lower losses. C. increase price to increase profits. D. increase production to increase profits.
The price of hamburgers is $2 and the price of brownies is $4. The consumer has $16 of income. The consumer is purchasing 3 hamburgers and receiving 20 utils for the last hamburger. He is also purchasing 2 brownies and receiving 40 utils for the last brownie. This set of goods
A. is an optimum since the entire income is spent and the marginal utility per dollar spent is the same for the last unit of each good. B. is not an optimum because the consumer has not spent all of his money. C. is not an optimum because the marginal utility per dollar spent is greater for hamburgers than for brownies. D. is an optimum since the entire income is spent and total utility is maximized.