Average fixed cost
a. equals marginal cost when an average total cost is at its minimum. b. may be found for any output by adding average variable cost and average total cost.
c. graphs as a U-shaped curve.
d. declines continually as output increases.

Problem 1. the following balance sheet contains errors. lopez services,inc. balance sheet for the year ended december 31, 20-- assets liabilities current assets: current liabilities: cash $ 6,170 accounts receivable $ 9,000 accounts payable 8,500 accum. depr- building 13,525 supplies 1,590 accum. depr- equipment 6,340 prepaid insurance 345 net income 12,500 land 25,000 total current assets $ 42,105 total liabilities $ 40,865 stockholders equity property, plant, and equipment: wages payable $ 500 building $ 45,500 retained earnings 10,000 equipment 28,250 total stockholders' equity $ 64,490 total property, plant, and equipment 73,750 total assets $115,855 total liabilities and stockholders' equity $115,855 (a) list the errors in the balance sheet above and (b) prepare a corrected balance sheet using ms excel