The Sandhill Clinic purchased a new surgical laser for $142,800. The estimated salvage value is $6,800. The laser has a useful life of five years and the clinic expects to use it for 10,000 hours. It was used 2,720 hours in year 1: 3,570 hours in year 2:4,080 hours in year 3; 3,230 hours in year 4:3,400 hours in year 5. (a) Compute the annual depreciation for each of the five years under each of the following methods: (1) (2) straight-line. units-of-activity. (Round answers to decimal place, eg. 1500.) Straight-line $ Units of Activity $ Year 1 Year 2 Year 3 Year 4 Year 5 Total $