I need help finding the formula to use for the ones circled. I want help on chegg (don't send me an email address to go to)

You pay $70.000 today for an annuity that makes payments at the end of each year for 15 years. with the first payment one year from today. If the yearly interest rate is 5%. What is the amount of each payment? ou want to have $60.000 saved seventeen years from today. You plan to make seventeen yearly payments into an account one payment at the end of each of the next seventeen years. If the account credits a 7% yearly interest rate, what is the amount of each payment? What is the price today of a perpetuity that pays $50.000 per year? The first payment is one year from today and the yearly interest rate is 4%. What is the future value, seventeen years from today, of a deposit of $5.000 made today into an account that credits an interest rate of 7.5% compounded semiannually? An 11 -year annuity will pay $6,000 per year at the end of each year. What is the present value today of this annuity at a 5% yearly interest rate? At a 3% yearly interest rate? At a 7% yearly interest rate? A 20-year annuity pays $1.000 at the end of each month. The interest rate is 15% compounded monthly for the first nine years, and then 18% compounded monthly. What is the present value of the annuity? You buy a $250,000 yacht on credit today. You make 60 equal monthly payments. The first payment is today. If the interest rate is 9% compounded monthly, what is the amount of each payment