A. Potter Inc. had a machine purchased for $80,000 on January 1,2015. Straight line was usecd for depreciation and the useful life was estimated at 10 years with a S5,000 salvage value. How much is the Accumulated Depreciation at 12-31-2016? On January 1,2017, the company revised the salvage value estimate to $10,000. Compute the 2017 depreciation expense. Year end is stll December 3