4. Calculate the following, and place the calculated solution on the appropriate line. In all cases, assume the companies that are the subject of the question are US corporations using US GAAP. b. Berful buys a machine for $75,000 on the first day of the year. The machine is expected to have a life of 5 years, and to have a salvage value of $15,000. Calculate the depreciation expense for year two of its life using the following methods. Straight-line method Double-declining balance Sum-of-the-years digits