Between 2009 and 2020, productivity growth is expected to account for about ________ percent of the growth of real GDP in the United States.

Which of the following best explains why a monopolist's marginal revenue is less than the sale price? a. To sell more units, a monopolist must increase the price on all units sold

b. As a monopolist expands output, its average total cost declines. c. When a firm has a monopoly, consumers have no choice other than to pay the price set by the monopolist. d. When a monopolist reduces price in order to sell more units, it must lower the price of some units that could otherwise have been sold at a higher price.

Which of the following is an important real consequence of the public debt of the United States?

A. It will threaten to bankrupt the Federal government B. It discourages saving among the general public C. It decreases the inequality in the distribution of income in the U.S. D. Its consequent higher interest rates lead to fewer incentives to bear risk and innovate