Which of the following constitutes the largest component of the world's international reserve assets?

In the Keynesian cross diagram, a decrease in investment spending because companies become more pessimistic about investment profitability causes the aggregate demand function to shift ________ and the equilibrium level of aggregate output to

________, everything else held constant. A) up; rise B) up; fall C) down; rise D) down; fall

A firm will buy monopoly power until the marginal cost of having a monopoly:

A. is more than the marginal benefit. B. is less than the marginal benefit. C. equals the marginal benefit. D. equals the price of its product.