Suppose a company's bond sold for $100 last month and this month the price is $90. The annual interest payment is $18. The current yield on this bond is

Jill, a bookkeeper just received an attractive offer from an outside firm. Her opportunity cost, of staying in her current position has

a. Increased b. Decreased c. Not changed d. All of the above

Constant returns to scale cause the long-run average cost curve to be:

A. horizontal. B. vertical. C. upward-sloping. D. downward-sloping.