13) To say that people make decisions at the margin means that they
A. . wait until the last minute before making a decision.
B. . weigh the additional costs and additional benefits of small changes.
C. . make decisions that determine whether or not they will live their lives on the edge of subsistence.
D. . make decisions on issues that are relatively unimportant for their economic well-being.
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12) Trade between two countries
A. . makes both countries better off.
B. . can benefit one country but not both.
C. . causes one country to gain and the other country to lose.
D. . is a zero-sum game.
Suppose the price of Coke increases. What would happen to the equilibrium price and quantity of Pepsi?
A. . Both the equilibrium price and quantity of Pepsi would increase.
B. . Both the equilibrium price and quantity of Pepsi would decrease.
C. . The equilibrium price of Pepsi would increase, and the equilibrium quantity of Pepsi would decrease.
D. . The equilibrium price of Pepsi would decrease, and the equilibrium quantity of Pepsi would increase.
Suppose oranges are currently selling for $2.00 per pound. The equilibrium price of oranges is $1.56 per pound. We would expect
A. . a shortage to exist and the market price of oranges to increase.
B. . a shortage to exist and the market price of oranges to decrease.
C. . a surplus to exist and the market price of oranges to increase.
D. . a surplus to exist and the market price of oranges to decrease.
When income increases, purchases of houses increase. This means
A. . the demand curve for housing has shifted rightward.
B. . there has been a movement down the demand curve for housing.
C. . the demand curve for housing has shifted leftward.
D. . there has been a movement up the demand curve for housing.
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