According to Okun's Law, the year-to-year change in the rate of unemployment is ________ if the annual growth rate of real GDP is 5%

The difference between a perfectly competitive firm's total revenue and its total cost is

A) always positive. B) always negative. C) always zero. D) greatest at the profit-maximizing level of output.

The risk premium on corporate bonds reflects the fact that corporate bonds have a higher default risk and are ________ U.S. Treasury bonds

A) less liquid than B) less speculative than C) tax-exempt unlike D) lower-yielding than