About what percentage of U.S. electricity was generated by coal-fired plants in 2012?

A. 10 percent
B. 20 percent
C. 35 percent
D. 60 percent


C. 35 percent

Economics

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The working-age population is defined as the number of

A) people over the age of 16 who are not in jail, hospital, or other institution. B) people who have a job. C) people working full-time jobs who are over the age of 16. D) people looking for work.

Economics

Which of the following is true? a. Consumption of a public good by one individual reduces the availability of the good for others. b. It is extremely difficult to limit the benefits of a public good to the people who pay for it

c. Public goods are free whenever the government produces them. d. From an efficiency standpoint, a market economy will generally supply too much of a public good.

Economics

If a worker is indifferent between a job with a wage of $10 per hour and a job with a wage of $12 per hour, then the

a. higher-paying job has a compensating wage differential of $2 per hour. b. higher-paying job has a compensating wage differential of $12 per hour. c. higher-paying job is intrinsically more attractive than the lower-paying job. d. wage in the higher-paying job must eventually fall due to competition.

Economics

The economist A.W. Phillips published a famous article in 1958 in which he showed a

a. negative correlation between the rate of unemployment and the rate of inflation. b. positive correlation between the rate of unemployment and the rate of inflation. c. negative correlation between the rate of unemployment and the rate of interest. d. positive correlation between the rate of unemployment and the rate of interest

Economics