The Golden Rule "Do unto others as you would have done unto you" is an example of the economic concept of:

The current exchange rate system in the United States is best described as a

A) silver standard. B) fixed exchange rate system. C) managed float exchange rate system. D) gold standard.

The model of perfect competition is valuable for

A) prediction. B) comparison to other markets. C) Either A or B. D) None of the above.