The Hartley Clinic purchased a new surgical laser for $90,000. The estimated salvage value is $5,000. The laser has a useful life of five years and the clinic expects to use it 10,000 hours. It was used 1,600 hours in year 1, 2,200 hours in year 2; 2,400 hours in year 3, 2,100 hours in year 4; 3,000 hours in year 5. Instructions (a) Compute the annual depreciation for each of the five years under each of the following methods: (1) straight-line. (2) units of activity Show computations