please assist me with the questions below

Question 2 2.1 You pay instalments of R824 at the end of each year into a savings account yielding 9% interest per annum, compounded annually. What should the future value of the investment be at the end of 23 years? (4) 2.2 [Sinking fund for rehabilitation at the end of the life of a mine] It is estimated that a quarry will have to spend R1 650 000 in 10 years' time on rehabilitation when it closes. Calculate the uniform series of equal payments that this quarry will have to make at the end of each year for a period of ten years in order to have saved up the R1 650 000 that is required for rehabilitation. An interest rate of 12% per year, compounded annually, applies. (3) 2.3 A mining company, which is recycling old mine dumps, wants to relocate the processing plant to a new site where several large dumps are situated. The relocation costs amount to R9,6 million. The expected life of the operation at the new site is 20 years. A loan for the relocation was obtained from a financial institution. The amount borrowed from the financial institution is 90% of the relocation cost and was obtained on the following terms: payback period: 20 years annual interest rate: 12% Calculate the monthly repayment amount. (3)