In the Keynesian world a falling real money supply causes GDP to __________ by __________ the real interest rate which causes a(n) __________ in investment

The "principle of rival consumption" applies to which of the following?

A) national defense B) the free-rider problem C) the exclusion principle D) a private good

If the price of computers decreases, then the:

A. sales of a substitute, such as a telephone, increase. B. sales of a substitute, such as a telephone, decrease. C. inventory of computer software increases. D. inventory of computers increases.