Expansionary monetary policy decreases the federal funds rate

According to the saving and investment equation, if net foreign investment rises by $60 million,

A) domestic investment will rise by $60 million. B) private saving will fall by $60 million. C) national saving will fall by $60 million. D) national saving will increase by $60 million.

The marginal product of labor is the

a. additional output produced when one more worker is hired b. amount of output associated with labor inputs c. maximum amount of output produced by a given set of inputs d. maximum profit "produced" by selling a firm's output e. additional cost associated with an additional unit of labor