everything is in the question only the cells are not there. please solve asap

Perth Company's net incomes for the past three years are presented below: During the 2023 year-end audit, the following items come to your attention: 1. Perth bought a truck January 1,2020 for $110,000 with an $10,000 estimated residual value and a five-year life. The company debited an expense account and credited cash on the purchase date for the entire cost of the asset. Perth uses the straight-line method for amortizing its vehicles. 2. During 2023, Perth changed from the straight-line method of amortizing its cement plant to the double-declining balance method. The following calculations present amortization for both methods`: The net income for 2023 was calculated on the double-declining balance method but no retroactive entries have been made. 3. Perth, in reviewing its provision for uncollectible accounts during 2023 , has determined that 1.2% of sales is the appropriate amount of bad debt expense to be charged to operations. The company had used 1% as its rate in 2022 and 2021 when the expense had been $9,000 and $6,000, respectively. The company recorded bad debt expense under the new rate for 2023 Required: (a) Prepare in general journal form any entries necessary to correct the books, assuming that the books have not been closed for the current year, 2023. Ignore income taxes. If no entry is required, briefly explain why. (b) Calculate the comparative net incomes for 2023 and 2022, starting with income before the effects of anv of changes identified above. Ignore all income tax effects. (c) Assume that the beginning retained earnings balance (unadjusted) for 2022 was $480,000 and for 2023 , it was $546,000. Dividends declared and paid in 2022 were $80,000 and in 2023 they were $120,000. Complete the comparative retained earnings statements for Perth Company for 2023 and 2022. Perth Company Statement of Retained Earnings Year ended December 31. 2023 and 2022 For each of the following items, indicate the type of accounting change and how each is recognizec in the accounting records in the current year. (a) Change from straight-line method of amortization to double declining-balance (d) Change due to failure to record amortization in a previous period (c) Change in the realizability of certain receivables