A machine costs $20,000 and has a 5 year useful life. At the end of the 5 years, it can be sold for $4,000. If annual interest is 8%, compounded semi annually, what is the equivalent uniform annual cost of the machine?
Hint: Find the effective rate first and then calculate. This is easier. Round off to whole dollars. Do not put in commas or $ signs, but do put in negative signs if needed.