Kleener Co acquired a new delivery truck at the beginning of its current fiscal year. The truck cost $25,000 and has an estimated useful life of four years and an estimated salvage value of $4,700 Calculate depreciation expense for each year of the truck's life using Straight-line depreciation. Calculate depreciation expense for each year of the truck's life using Double-declining-balance depreciation Calculate the truck's net book value at the end of its third year of use under each depreciation method