Final answer:
For each year of use, the depreciation using a straight-line approach would be $5,000. The depreciation per mile driven is $0.20. If Tom drives the vehicle 27,000 miles in the first year, he would recognize $5,400 in depreciation.
Step-by-step explanation:
(a) To calculate the depreciation using a straight-line approach, we need to subtract the value of the vehicle at the end of its useful life from its initial cost and divide it by the number of years of use. In this case, the depreciation per year would be ($28,000 - $8,000) / 4 = $5,000.
(b) To calculate the depreciation per mile driven, we need to divide the difference in value (initial cost - residual value) by the expected number of miles driven. In this case, the depreciation per mile would be ($28,000 - $8,000) / 100,000 = $0.20 per mile.
(c) If Tom drives the vehicle 27,000 miles in the first year of use, he would recognize depreciation of $0.20 per mile * 27,000 miles = $5,400 for the year.