Use the following information to answer the questions. On April 1, 2012, A machine is purchased at a cost of $27,000. It is estimated to have a 15year life span with a residual value of $6,000. On January 1,2020 , there was a change of accounting estimate. The machine's lifespan would instead be 20 years total with no change in residual value. Using the straight-line method, record the annual depreciation below: Annual depreciation: peryear Using the straight-line method, record the depreciation for 2020 below: Depreciation for 2020