Bramble Corp. purchased a delivery truck for $36,000 on January 1,2022. The truck has an expected salvage value of $3,000, and is expected to be driven 100,000 miles over its estimated useful life of 8 years. Actual miles driven were 13,400 in 2022 and 13,900 in 2023 . (a1) Your answer is correct. Calculate depreciable cost per mile under units-of-activity method. (Round answer to 2 decimal places, es. 0.50.) Depreciable cost permile 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