help me pls with these as soon as possible

1- You set up a college fund in which you pay $4000 each year at the beginning of the year. How much money (in $) will you have accumulated in the fund after 23 years, if your fund earns 9% compounded annually?

2- You are planning your retirement and you come to the conclusion that you need to have saved $1000000million in 30 years. You can invest into an retirement account that guarantees you a 15% annual return. How much do you have to put into your account at the end of each year to reach your retirement goal?

3- Lauren knows she can afford to make monthly payments of $300 for 48 months. How much will the bank lend her today on a 3% APR car loan in exchange for her promised monthly payments?

4- Your bank offers you a 60-month, 3% APR car loan for a $58000 new Mercedes SLK300 Roadster. What will your monthly payment be?