Perfectly competitive firms respond to changing market conditions by varying their
a. price
b. output
c. market share
d. information
e. advertising campaigns
B
Economics
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In the economic way of thinking, traffic congestion is a sign of
A) a surplus of people. B) a surplus of automobiles. C) a shortage of buses. D) a negative externality.
Economics
A monopolist can sell 20 toys per day for $8.00 each. To sell 21 toys per day, the price must be cut to $7.00. The marginal revenue of the 21st toy is:
A. -$10 B. -$13 C. +$7 D. +$21
Economics