A level at which the marginal production goes up with new investment:

Suppose a German bank purchases a U.S. Treasury bond. This transaction would be recorded in the:

a. unilateral transfers. b. current account. c. capital account. d. goods trade balance.

Pookie's Pinball Palace restores old Pinball machines. Pookie has just spent $300 purchasing and cleaning a 1960s-era machine which he expects to sell for $2,000 once he is finished with the restoration. After having spent $300, Pookie discovers that he

will need to rewire the entire machine at a cost of $1,100 in order to finish the restoration. Alternatively, he can sell the machine "as is" now for $1,000. What is the marginal cost of completing the task? A) $300 B) $800 C) $1,100 D) $1,400