A decrease in marginal tax rates will ________ after-tax profits and ________ more investment.

Which of the following costs can be positive when output is zero?

A) average variable cost B) total variable cost C) marginal cost D) total fixed cost E) None of the above because when output is zero there are no costs.

A likely explanation for the 2008-2009 recession is

A) an increase in energy prices. B) financial market problems. C) a drastic reduction in government expenses. D) an increase in taxes.