If more and more labor is employed while keeping all other inputs constant, the marginal physical productivity of labor will eventually:

If the realized real interest rate in an economy is 6%, the realized inflation rate is 8%, and the expected inflation rate is 8%, then the nominal interest rate in the economy is:

A) 2%. B) 8%. C) 20%. D) 14%.

If average costs of production decline with increases in output for a particular firm:

a. many small firms will be more efficient than a single large firm. b. one large producer will be more efficient than many small producers. c. product diversification is necessary to spread the overhead. d. diseconomies of scale become significant as output increases. e. the variable cost of production must exceed the fixed costs.