3. DEF Co. uses the double-declining balance method of depreciation. The company's fiscal year end is December 31. The following transactions and events occurred during the first three years. Prepare the necessary journal entries. (Show computations.) 2013 July 1 Nov. 3 Dec. 31 2014 Dec. 31 2015 Jan. 1 Dec. 31 Purchased a computer for $4,500 cash. Incurred ordinary repairs on computer of $400. Recorded 2013 depreciation on the basis of a 5 year life and estimated residual value of $500. Recorded 2014 depreciation. Paid $800 for an upgrade of the computer. This expenditure is expected to increase the operating efficiency and capacity of the computer. Recorded 2015 depreciation, the company changed the depreciation method to straight-line method..