Jill runs a factory that makes lie detectors in Little Rock, Arkansas. This month, Jill's 34 workers produced 690 machines. Suppose Jill adds one more worker and, as a result, her factory's output increases to 700 Jill's marginal product of labor from the last worker hired equals ________.

At any point along the LM curve,

A) the quantity of money demanded equals the quantity of money supplied. B) the economy must be in general equilibrium. C) the nominal interest rate must equal the real interest rate. D) saving must equal investment.

Suppose the price elasticity of supply for soccer balls is 0.3 in the short run and 1.2 in the long run. If an increase in the demand for soccer balls causes the price of soccer balls to increase by 20%, then the quantity supplied of soccer balls will increase by about

a. 0.67% in the short run and 0.17% in the long run. b. 3% in the short run and 1.2% in the long run. c. 6% in the short run and 24% in the long run. d. 66.7% in the short run and 16.7% in the long run.