Current Attempt in Progress Ayayai Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on January 1, 2022, at a cost of $135,800. Over its 4-year useful life, the bus is expected to be driven 92,000 miles. Salvage value is expected to be $7,000. (a) Compute the depreciable cost per unit. (Round answer to 2 decimal places, e.g. 0.50.) Depreciation cost per unit $ per mile