At the point on the demand curve at which marginal revenue = 0, the absolute value of the coefficient of the price elasticity of demand is:

Refer to the production possibilities frontier in the figure above. If the country moves from point a to point c, the opportunity cost of the move is

A) 30 million capital goods. B) 20 million capital goods. C) 10 million capital goods. D) 10 million consumption goods.

If brokerage commissions on stocks fall, everything else held constant, the demand for bonds ________, the price of bonds ________, and the interest rate ________

A) decreases; decreases; increases B) decreases; decreases; decreases C) increases; decreases; increases D) increases; increases; increases