Christians fitness center purchased a new treadmill for 8250 the treadmill is expected to last 4 years or 8,000 hours and have a residual value of 750 the treadmill was used for 2400 hours year 1 ..... 2000 hours in year 2.....2200 hours in year 3.... 1400 hours in year 4... what will the depreciation expense be for each year under the:

sum of the years digits method