The demand for labor depends primarily on the additional output produced as a result of
hiring an additional worker and
A) the additional revenue received from selling the output produced as a result of hiring
an additional worker.
B) the payment made to the worker for producing the additional output.
C) the elasticity of demand for the output produced by the worker.
D) the number of workers willing to produce the additional output.
Assume that the medical screening industry is perfectly competitive. Consider a typical
firm that is making short-run losses. Suppose the medical screening industry runs an
effective advertising campaign which convinces a large number of people that yearly
CT scans are critical for good health. How will this affect a typical firm that remains in
the industry?
A) The firm’s supply curve shifts right and its marginal revenue curve shifts upwards as
the market price rises and ultimately the firm starts making profits.
B) The firm’s marginal revenue curve and average cost curve shift upwards in response
to the increase in market price and advertising expenditure. The firm increases output
until it starts breaking even.
C) The marginal revenue curve shifts upwards, the firm’s output increases along its
marginal cost curve, it expands production and eventually starts making profits.
D) The marginal revenue curve shifts upwards, the firm’s output increases along its
marginal cost curve, it expands production until it breaks even.