Compute depreciation expense for 2022 and 2023 using (1) the straight-line method, (2) the units-of-activity method, and (3) the double-declining-balance method. Wildhorse Co. purchased a delivery truck for $42,000 on January 1, 2022. The truck has an expected salvage value of $8,000, and is expected to be driven 100,000 miles over its estimated useful life of 8 years. Actual miles driven were 16,000 in 2022 and 11,300 in 2023. (a1) Your answer is correct. Calculate depreciable cost per mile under units-of-activity method. (Round answer to 2 decimal places, eg. 0.50.) Depreciable cost per mile