6. Foley Word Processing Service uses the straight-line method of depreciation. The company's fiscal year-end is December 31. The following transactions and events occurred during the first three years. 2020 July 1 Purchased a computer from the Computer Center for $2,200 cash plus sales tax of $150, and shipping costs of $50. Nov. 3 Incurred ordinary repairs on computer of $140. Dec. 31 Recorded 2020 depreciation on the basis of a four year life and estimated salvage value of $500. 2021 Dec. 31 Recorded 2021 depreciation. 2022 Jan. 1 Paid $300 for an upgrade of the computer This expenditure is expected to increase the operating efficiency and capacity of the computer. Instructions Prepare the necessary entries. (Show computations.)