Exercise 9-19 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 $117,000. Over its 4-year useful life, the bus is expected to be driven 210,000 miles. Salvage value is expected to be $7,800. Compute the depreciation cost per unit. (Round answer to 3 decimal places, e.g. 6.251) Depreciation cost per unit LINK TO TEXT VIDEO: APPLIED SKILLS Prepare a depreciation schedule assuming actual mileage was: 2017, 46,800; 2018, 60,840; 2019, 47,970; and 2020, 31,590. (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 Years Units of Activity x Depreciation Cost/Unit Annual Depreciation Expense Accumulated Depreciation Book Value 2017 2018 2019 2020 LINK TO TEXT IDEO: APPLTED SKILLS