If the price of a commodity increases, you can expect the:
A) supply to increase.
B) quantity supplied to increase.
C) quantity supplied to decrease.
D) supply curve to shift to the right.
The demand curve facing a monopolist is:
A) vertical, the same as that facing a perfectly competitive firm.
B) perfectly inelastic, the same as that facing a perfectly competitive firm.
C) upward-sloping, the same as that facing a perfectly competitive firm.
D) downward-sloping, like the industry demand curve in perfect competition.
The publisher of an economics textbook finds that when the book’s price is lowered
from $70 to $60, sales rise from 10,000 to 15,000. By the midpoint method, the price
elasticity of demand is:
A) 500.
B) 50.