If the contribution from capital and labor growth in a given economy equals 4.0 percent and output growth equals 6.4 percent over that same period of time, then productivity growth must equal ________

When a firm produces 50,000 units of output, its total cost equals $6.5 million. When it increases its production to 70,000 units of output, its total cost increases to $9.4 million. Within this range, the marginal cost of an additional unit of output is

A) $41.43. B) $134.29. C) $135. D) $145.

Fiscal policy refers to a government's choices over its

A) expenditures, taxes, transfers, and borrowing. B) expenditures, taxes, issuance of money, and borrowing. C) expenditures, foreign affairs, issuance of money, and borrowing. D) issuance of money, taxes, environmental regulations, and foreign affairs.