Which of the following cost functions will exhibit both decreasing and increasing marginal costs?
A) a cubic cost function
B) a quadratic cost function
C) a linear cost function
D) All of the above
A
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Refer to the figure below.________ inflation will eventually move the economy pictured in the diagram from short-run equilibrium at point ________ to long-run equilibrium at point ________. 
A. Rising; A B. Falling; A; C C. Falling; B: C D. Rising; A; C
A particular cable TV company requires a household to subscribe to its high-speed Internet service if it subscribes to cable TV, and vice versa. This practice
a. is referred to as tying. b. is regarded by some economists as a form of price discrimination. c. is controversial among economists because they disagree on whether it has adverse effects for society as a whole. d. All of the above are correct.
If the Central Bank wants to increase the supply of money in the economy, it should:
(a) Raise the reserve requirement. (b) Raise the rate of discount. (c) Buy government bonds in the market. (d) Both (a) and (b) are correct.
Suppose an oil cartel has an agreement to restrict members' production in order to maintain a price of $30 per barrel. A single cartel member may want to cheat and exceed its quota so that it can:
A. reduce its costs. B. charge higher prices. C. make demand more inelastic. D. earn a bigger profit.