1.You would like to have $29,354 in 10 years. If the rate is 8.38%, how much do you have to invest each month?

2.You would like to have $46,657 in 6 years.. If the rate is 7.77%, how much do you have to invest each year?

3.You will invest $200 per year. If the rate is 8.58%, how much will you have in 11 years?

4.An investment will give you monthly payments of $474 for 5 years. If your required return is 10.84%, what is it worth today? please come with formulas. thanks