D.Increased power of unions.
7) In a typical month, a family buys six bags of candy bars as snacks when the price of
a bag costs $4.00. When the price of the candy bars falls to $3.00 a bag, the family buys
seven bags of candy bars a month. When the price of a bag of candy bars rises to $6.00,
the family buys three bags a month. Answer these questions: (a) How did the fall in the
price affect real income in terms of bags of candy bars? (b) How did the rise in the price
affect real income in terms of bags of candy bars? [Hint: How many bags of candy bars
could the family buy in situation (a) and in situation (b) without changing the amount
they spend on candy bars in a typical month?]
8) The demand curve faced by a purely competitive firm:
A.Has unitary elasticity
B.Yields constant total revenues even when price changes
C.Is identical to the market demand curve
D.Is the same as its marginal revenue curve
9) Which of the following statements is true for a long-run supply curve that slopes
upward?
A.If total market output is increased, unit costs of production increase
B.If total market output is unchanged, unit costs of production increase
C.The total cost of producing 15 units is no larger than the cost of producing 10 units
D.If total market output is decreased, total costs of production will remain unchanged