Please show all work!

Musk Enterprises relies heavily on a copier machine to process its paperwork. Recently the copy clerk has not been able to process all the necessary copies within the regular workweek. Management is considering updating the copier machine with a faster model. Current Copier New Model Original purchase cost $10,000 $20,000 Accumulated depreciation 5,000 Estimated operating costs (annual) 7,000 2,600 Useful life 5 years 5 years If sold now, the current copier would have a salvage value of $3,000. If operated for the remainder of its useful life, the current machine would have zero salvage value. The new machine is expected to have zero salvage value after five years. Required: a. Which of the data provided in the table is a sunk cost? b. Prepare an analysis to show whether the company should retain or replace the machine. (prepare table) c. What should they do? What is the impact on Net Income