Need help on these two questions

A tractor is bought for RM30,000 on 1 January 2010. It will be depreciated at 10% per annum using straight line method. Show the depreciation calculations for 3 years. (15 Marks) QUESTION 2 Show the journal entries necessary to record the following items: (15 Marks) 1-May Started a business with RM 150,000 cash in a Transferred cash into bank RM 120,000. Bought a vehicle RM 35,000 by cheque. Sold goods to Mei Hwa RM 20,000 by credit Bought furniture RM 5,000 by cash QUESTION 3 Show the journal entries necessary to record the following items: (15 Marks) 14-June Mei Hwa returned goods RM 6,300 by cash Purchased goods RM 6,300 by cash Bought additional goods RM 8,500 from Azwan by credit 26 Paid Azwan in fully by cheque. Paid salary RM 7,800 by cheque QUESTION 4 Explain the following using appropriate examples. (7 Marks)