Please help me .. Please help me .Please help me .. please very urgent , i upvote you please

Q2. (a) Tammy owns a bookstore and closes the account on 31 December every year. On 20 December 2019, she supplied books to Sekolah Kebangasaan Bangi, amounting to RM6,000. SK Bangi paid half of the amount in December 2019 and settled the other half in the following year. The total utility bill for the year was RM1,500. She received the December electricity bill of RM450 on 28 December 2019 and made payment the following January. When Tammy prepared the 2019 year-end report, she recorded the RM6,000 as current year sales and added the unpaid December electricity bill to the current year utility expenses. Based on the above case, thoroughly explain if the transactions recorded by Tammy complied with the accounting principles. (8 marks) (b) Sarah operates an advertising company. Based on past experiences, some debtors failed to settle the outstanding amount for various reasons. Hence, from this year onwards, she decided to set aside 1% from total debtors to provide for anticipated losses due to default payments. (i) Explain if Sarah is permitted to provide such a percentage for the reporting even though the default has yet to happen. (5 marks) Explain if it contravenes the objectivity concept when Sarah makes the provision based on estimation. (5 marks) (ii) (c) Cube Photocopy Services has the following photocopy machines for their outlet in Kajang. The details are as follows: Model Purchase Date Canon 500 XXi Canon 800 XXi Canon 1000 XXi Unit Cost Per Unit (RM) 5,000 1 7,000 1 10,000 1 April 2019 1 May 2019 1 November 2019 On 1 October 2020, Canon 500 XXi was disposed of at RM 4,000. The business adopted the straight-line depreciation method, and the machines were depreciated at the rate of 25% per annum. The company's financial year ends on 31 December each year. (i) (ii) Calculate the total depreciation expenses for the year 2019. (3 marks) Prepare the journal entries to record the disposal of the Canon 500 XXi. (4 marks)