Please solve all 3 and show work. Thank you!!

1. You are 21, retire at 65 with $1,000,000, earn 10% per year compounded annually, what must you invest TODAY to reach your goal?

2. Grandpa puts $50,000 into a bank account for you earning 4% compounded monthly. How much will you have in the account after 4 years if you don't make Grandpa mad enough to take the money back before then?

3. You are considering an investment with a quoted return of 8% per year. If interest is compounded monthly, what is the effective annual return on this investment?