7. Bomton University uses the straight-line method of depreciation and its fiscal year end is December 31. The following transactions and events occurred between 2019-2021. Prepare the necessary entries. (Show computations.)

2019 July 1 Purchased 95 computers from HP Inc. for $850 cash each plus sales tax of $60, and shipping costs of $50.

2019 Nov. 4 Incurred ordinary repairs on computers of $1780 in total.

2019 Dec 31 Recorded 2019 depreciation on the basis of a 8 year life and estimated salvage value of $200 for each computer.

2020 Dec. 31 Recorded 2020 depreciation.

2021 Mar. 1 Paid a total of $9,900 for an upgrade of the computers. This expenditure is expected to increase the operating efficiency and capacity of the computers.