If a monopolist can sell 20 units at price of $200 per unit and 30 units at a price of $180 per unit, its marginal revenue at an output of 30 is

Which of the following policy combinations were used by the government during the financial crisis of 2007-2009 in the U.S.?

A) Income tax rates were increased and payroll taxes were reduced. B) Payroll tax rates were increased and government spending was reduced. C) A combination of both fiscal and monetary policies were used. D) The eligibility period for unemployment insurance was shortened.

The aggregate real money demand schedule L(R,Y)

A) slopes upward because a fall in the interest rate raises the desired real money holdings of each household and firm in the economy. B) slopes downward because a fall in the interest rate reduces the desired real money holdings of each household and firm in the economy. C) has a zero slope because a fall in the interest rate keeps constant the desired real money holdings of each household and firm in the economy. D) slopes downward because a fall in the interest rate raises the desired real money holdings of each household and firm in the economy. E) slopes downward because a rise in the interest rate makes consumers less focused on the liquidity of their assets.