I need help with these homework problems.

On 1/1/16, Foxtails Corp. purchased equipment for $200,000. The estimated useful life is 7 years, the estimated residual value is $14,500, and the company uses the straight- line method of depreciation. On 1/1/20, the company upgraded various components of the machinery at a total cost of $18,000. The upgrade increases the useful life of the equipment to a total of 10 years, and the revised estimated salvage value is $13,000. After depreciation expense is recorded for the year, what is the book value of the equipment on 12/31/20? In October of 2019, Waveshine, Inc. purchased a tract of land as a factory site for $800,000. The old building on the property was demolished at a cost of $70,000, and salvaged materials resulting from the demolition were sold for $8,000. Additional costs incurred during 2019 were as follows: $10,000 $16,000 Legal fees related to real estate contract Legal fees for real estate title investigation Costs associated with ground- breaking ceremony Installation of roads, sidewalks, and parking lots $5,000 $150,000 What amount should be reported as land in the company's 12/31/19 balance sheet? On 8/1/17, Covelline Corp. purchased equipment for $110,000. The company uses the straight-line method to depreciate the equipment, with an estimated useful life of 8 years and an estimated salvage value of $14,000. At the beginning of 2021, the company traded in the equipment for the latest model. The fair value of the new equipment on the date of the exchange is $100,000. To complete the exchange, Covelline paid $25,000 to the equipment manufacturer. The exchange is determined to have commercial substance. What is the amount of gain that Covelline should record on this exchange