10) If a 10 percent increase in price leads to a 12 percent decline in the quantity demanded, the price elasticity of demand is
A. a. 0.83
B. b. 1.2
C. c. 2
D. d. 2.2
查看答案
11) Beth’s friends want to take her to a movie or a play for her birthday. Beth chooses to attend the play. We know that:
A. a. Beth has made an irrational decision.
B. b. not seeing the movie is Beth’s opportunity cost of attending the play.
C. c. Beth did not make a decision at the margin.
D. d. seeing the play did not cost Beth anything since she did not have to pay for the ticket.
12) Trade between two countries
A. a. makes both countries better off.
B. b. can benefit one country but not both.
C. c. causes one country to gain and the other country to lose.
D. d. is a zero-sum game.
13) To say that people make decisions at the margin means that they
A. a. wait until the last minute before making a decision.
B. b. weigh the additional costs and additional benefits of small changes.
C. c. make decisions that determine whether or not they will live their lives on the edge of subsistence.
D. d. make decisions on issues that are relatively unimportant for their economic well-being.
7) An increase in fixed cost will affect which of the following?
A. . Marginal cost.
B. . Average variable cost.
C. . Average total cost.
D. . Marginal revenue.
微信支付 
支付宝支付