A large nuclear power plant has a rated capacity of 1 GW electric. Its actual output is estimated to average about 80% of capacity due to the need for maintenance and imperfect match between supply and demand. Assuming that year-round average residential electricity needs are about 1 kW electric per housing unit and there are three residents per unit, estimate how many power plants would be needed to satisfy the demand of a metropolitan area with a population of 30 million.

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.