Which of the following is the primary determinant of aggregate demand in the simplest Keynesian expenditure model?

Suppose the government cuts taxes. We would expect interest rates to ________ and the dollar to ________ in foreign exchange markets

A) rise; appreciate B) fall; depreciate C) rise; depreciate D) fall; appreciate

Under imperfect competition, a firm's:

a. demand curve lies below its marginal revenue curve. b. demand curve lies above its marginal revenue curve. c. demand curve coincides with its marginal revenue curve. d. demand curve coincides with its marginal cost curve. e. demand curve coincides with its average cost curve.