If a firm experiences economies of scale, then, as output increases,
a. short-run total costs decline
b. long-run total costs rises proportionately more than output
c. short-run marginal cost must decline
d. long-run total cost rises proportionately less than output
e. demand increases
D
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A firm will find it profitable to hire workers up to the point at which their
A. marginal resource cost is equal to their MRP. B. MP is equal to their MRP. C. marginal resource cost equals their wage rate. D. wage rate equals product price.
Why should people without children pay some tax to support local schools?
What will be an ideal response?
Most economists have argued that the persistence of high unemployment despite New Deal policies:
a. constitutes a complete repudiation of New Deal policies. b. was the result of "sticky" wages. c. was in part the result of pressures from government to maintain wages. d. Both b and c are correct.
Suppose the figure below shows Luke's demand curve for check-ups along with the supply curve for check-ups. 
What is the marginal cost of one extra check-up?
A. $100 B. $150 C. $200 D. $50