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Required information [The following information applies to the questions displayed below.) Wardell Company purchased a mainframe on January 1, 2019, at a cost of $54,000. The computer was depreciated using the straight-line method over an estimated five-year life with an estimated residual value of $6,000. On January 1, 2021, the estimate of useful life was changed to a total of 10 years, and the estimate of residual value was changed to $3,600. Required: 1. Prepare the year-end journal entry for depreciation in 2021. No depreciation was recorded during the year. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field. Round your final answer to nearest whole dollar.) View transaction list Journal entry worksheet Record depreciation expense for 2021. Note: Enter debits before credits. General Journal Debit Credit Event 1 Record entry View general journal Clear entry