i need answer for this four questions

D) One year from now, you deposit RM500 in a saving account. You deposit RM1,500 the next year. Then you wait two more years (until 4 years from now) and deposit RM1,000. If your account always carns 6% annual interest and you make no withdrawals, how much will be in the account 12 years from now? Pa b) You have RM20,000 you want to invest for the next 40 years. You are offered in investment plan that will pay you 8% per year for the next 20 years and 12 percent per year for the last 20 years. How much will you have at the end of the 40 years? (6 marks) c) During her four years at MMU, Alisya received the following amounts of money at the end of each year from her grandmother. She deposited her money in a saving account paying 6 percent rate of interest. Alisya graduated in her 4th year of study. How much money will she has on her graduation day? Year RM 1000 2000 3000 4000 (6 marks) d) Maryam would like to accumulate RM10,000 by the end of 3 years from now to buy a car from her friend, Adam. She has RM2,500 now and would like to save equal annual end-of-year deposits to pay for the car. How much should she deposit at the end of each year in an account paying 8 percent interest to buy the car? (8 marks)