Current Attempt in Progress A machine which cost $550,000 is acquired on October 1, 2020. Its estimated salvage value is $55,000 and its expected life is 4 years. (a1) Calculate depreciation expense for 2020 and 2021 by double-declining balance. (Round answers to decimal places, eg. 5,275.) 2020 2021 Depreciation expense $ Save for Later Last saved 8 minutes ago Attempts: 0 of 1 used Submit Answer Saved work will be auto-submitted on the due date