Which of the following is a characteristic of a monopoly but not a characteristic of a perfectly competitive market?
a) a monopoly is a price-taker.
b) a monopoly produces an efficient level of output
c) a monopoly may earn long-run economic profits.
d) a monopoly has no market power.

Corrective action must be taken for a project when (a) actual progress to the planned progress shows the progress is ahead of schedule. (b) the technical specifications have been met. (c) the actual cost of the activities is less than the funds received for the work completed. (d) the actual progress is less than the planned progress.

The former chairman of the federal reserve, alan greenspan, used the term "irrational exuberance" in 1996 to describe the high levels of optimism among stock market investors at the time. stock market indexes such as the s& p composite price index were at an all-time high. some commentators believed that the fed should intervene to slow the expansion of the economy. why would central banks want to clamp down when the economy is growing? a. to block the formation of unsustainable speculative asset bubbles. b. to curtail excessive profits in the banking system. c. to prevent inflationary forces from gathering momentum. d. all of the above. e. a and c only.

Abond purchased for $950 was sold for $980 after one year. the interest received during the year is $25. the bond's yield is: