Exercise 9-1 Whippet Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on January 1, 2017, at a cost of $127,000. Over its 4-year useful life, the bus is expected to be driven 216,000 miles. Salvage value is expected to be $8,200 nswer is incorrect. Try again. Your a Compute the depreciation cost per unit. (Round answer to 3 decimal places, e.g. 6.251) Depreciation cost per unit LINK TO TEXT Your answer is incorrect. T ry again. Prepare a depreciation schedule assuming actual mileage was: 2017, 50,800; 2018, 66,040; 2019, 52,070; and 2020, 34,290. (Round depreciation cost per unit to 3 decimal places, e.g. 0.125 and other answers to 0 decimal places, e.g. 125) Computation End of Year Units of Activity Depreciation Cost/Unit Annual Depreciation Expense Accumulated Depreciation Book Value Years 2017 2018 2019 2020