Solve and explain ALL 4 correctly for a thumbs up.

On January 1, 2015, the Morgantown Company ledger shows Equipment $72,200 and Accumulated Depreciation-Equipment $10,240. The depreciation resulted from using the straight-line method with a useful life of 10 years and salvage value of $4,640. On this date, the company concludes that the equipment has a remaining useful life of only 4 years with the same salvage value. Compute the revised annual depreciation. Revised annual depreciation