On July 1, 2020 Bonita's Greenhouse purchased a new delivery truck for $80,000. Bonita estimates that the delivery truck will have a five-year useful life, or 144,000 kilometres, and a residual value of $8,000. Bonita's Greenhouse has a December 31 year end. Bonita drove the truck 10,000 km in 2020 and 37,000 km in 2021. Calculate depreciation expense using the straight-line method for 2020 and 2021. 2020 Depreciation Expense $ Calculate depreciation expense using the double-diminishing-balance method for 2020 and 2021. 2020 2021 $ $ Calculate depreciation expense using the units-of-production method for 2020 and 2021. (Round depreciable amount per unit to 2 decimal places, e.g. 5.27 and the final answers to O decimal places, e.g. 5,275.) 2020 ta Depreciation Expense