Cullumber Company purchased a delivery truck for $24,000 on January 1,2022 . The truck has an expected salvage value of $1,000. and is expected to be driven 100,000 miles over its estimated useful life of 8 years. Actual miles driven were 12,000 in 2022 and 10,000 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 permile Compute depreciat expense for 2022 and 2023 using (1) the straight-line method, (2) the units-of-activity method, and (3) the double-declining-balance method