Problem
A plate forming machine was purchased four years ago at $100,000. The owner used a 10-year straight-line depreciation with an assumed resale value of $20,000 for this machine. He has an offer to sell this machine for $25,000. What is his opportunity cost?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.