How do i use Annuity formula to solve the following:

Question 1

You won the lottery.The money is paid in equal annual installments of $70,048 over 20 years beginning today.If the appropriate discount rate is 5.28%, how much is the sweepstakes actually worth today?

Question 2

You charged $2,286 on a credit card.If you pay the minimum payment per month of $49, you will pay it off after making 95 payments.If you pay $10 more per month, you will pay it off 30months sooner.How much total interest will you save?

Question 3

You are buying a car today and will pay back $325 per month for 48 months.You make your first payment today.If the rate is 4.16%, how much did you borrow?

Question 4

An investment will give you monthly payments of $1,824 for 13 years. You will receive your first payment today.If your required returnis 11.54%,what is it worth today?

Question 5

Your grandfather has some extra money lying around and he is considering investing in something that will pay $2,018per month in perpetuity.If the required return is 6.15%,howmuch should he be willing to pay for it today?