University Car Wash built a deluxe car wash across the street from campus. The new machines cost $270,000 including installation. The company estimates that the equipment will have a residual value of $24,000. University Car Wash also estimates it will use the machine for six years or about 12,000 total hours. Actual use per year was as follows:
years ; hours used
1 3.100
2 1.100
3 1.200
4 2.800
5 2.600
6 1.200
Prepare a depreciation schedule for six years using the:
a) Straight-line method.
b) Double-declining-balance method.
c) Activity-based method.