On January 2, 2018. Country Lumber installed a computerized machine in its factory at a cost of $168.000. The machine's useful life was estimated at four years or a total of 190,000 units with a $35,000 trade-in value. Country Lumber's year-end is December 31. Calculate depreciation for each year of the machine's estimated useful life under each of the following methods: a. Straight-line b. Double-declining-balance c. Units-of-production, assuming actual units produced were: Year.... 2018 2019 2020 2021 Units............. 39,900 43,550 54,200 72,000 On November 10, 2020, Singh Electronics began to buy and resell Scanners for $55 each. Singh uses the perpetual system to account for inventories. The scanners are covered under a warranty that requires the company to replace any non-working scanner within 90 days. When a scanner is returned, the company simply throws it away and mails a new one from inventory to the customer. The company's cost for a new scanner is only $35. Singh estimates warranty costs based on 18% of the number of units sold. The following transactions occurred in 2020 and 2021 (ignore GST and PST): 2020 Nov. 15 Sold 2.000 scanners for $110.000 cash. 30 Recognized warranty expense for November with an adjusting entry. 8 Replaced 150 scanners that were returned under the warranty. 15 Sold 5.500 scanners. 29 Replaced 40 scanners that were returned under the warranty. 31 Recognized warranty expense for December with an adjusting entry. 2021 Jan. 14 Sold 275 scanners. 20 Replaced 63 scanners that were returned under the warranty. 31 Recognized warranty expense for January with an adjusting entry. Dec. Required 1. How much warranty expense should be reported for November and December 2020? 2. How much warranty expense should be reported for January 2021? 3. What is the balance of the estimated warranty liability as of December 31, 2020? 4. What is the balance of the estimated warranty liability as of January 31, 2021? 5. Prepare journal entries to record the transactions and adjustments (ignore sales taxes)