Riverbed Taxi Service uses the units-of-activity method in computing depreciation on its taxicabs. Each cab is expected to be driven 153,000 miles. Taxi no. 10 cost $43.510 and is expected to have a salvage value of $2,200. Taxi no. 10 is driven 35,200 miles in year 1 and 21,300 miles in year 2. (a1) Your answer is incorrect. Calculate depreciation cost per mile using unit-of-activity method. (Round answer to 2 decimal places, e.g. 0.50.) Depreciation cost $ per mile