please help me solving this this question 3 and 4 just send me the picture of solutions

3. You invested your summer earnings into an annuity from which you can draw expenses while you are at university. If you need to withdraw $1200 each month for 9 months of university, how much do you need to invest in an account, earning 6% per year, compounded monthly, in order to cover your expenses? 4. If $25,000 is invested into an account paying 4.5% per year, compounded bi-monthly, how much money can be withdrawn from the account every two months for the next 6 years