As a person's or family's income rises, the marginal federal income tax rate __________

After an economy begins to recover, suppose that the Fed quickly raises interest rates back to the level seen before the recession in order to prevent inflation from occurring. Which type of Fed policymaker would be more likely to have taken this action?

A) Hawks B) Doves C) Both doves and hawks. D) Neither doves nor hawks.

Supposed actual investment is greater than planned investment at the current level of output in 2010. Given this information, we know that

A) GDP will tend to increase over time. B) firms' stock of inventories must have increased unexpectedly in 2010. C) saving must be less than planned investment. D) saving must be equal to planned investment.