please help me with these. I use excel

Unanswered Question 2 0/10 pts Assume you want to retire in 38 years, having accumulated $4,508,362 in an investment portfolio, how much will you have to invest per month if you believe you can make 9.56% per year return on your investment? (Please enter your response calculated to the penny.) You Answered Correct Answer 990.04 margin of error +/- 1 Question 3 0/10 pts You are planning for your retirement. After studying intensely, you have decided that you want to have saved $1,854,572 for retirement before you retire. Realistically, you think you can only save or invest $1.737 per month. If you save that amount per month, and you can earn 7.52%, how many years will it take to amass $1,854,572 for retirement? (Please respond with two decimal point precision -for example 23.32, meaning 23.32 years.) You Answered 70.93 Correct Answer 27.21 margin of error +/- 0.5 C 78 75F