i need this question to be solved step by step plese

1) a) How much money would you have to invest today to accumulate $6,000 after 6 years if the rate of return on your investment is 12% ? b) What is the present value of $6,000 that you will receive after 6 years if the discount rate is 12% ? c) What is the most you would spend today for an investment that will pay $6,000 in 6 years if your opportunity cost is 12% ? d) Compare, contrast, and discuss your findings in parts a through c