A drill press was purchased 4 years ago for $40,000. Its estimated salvage value after 7 years was $5000. The press can be sold for $15,000 today, or for $12,000, $9000, or $6000 at the ends of each of the next 3 years. The annual operating and maintenance casts for the next 3 years will be $2700 for this year and then will increase by $800 per year. What are the relevant cash flows for this machine? Please do not use excel to solve problem