Please help with these couple of financial accounting problem:

You are offered an investment that will pay $24,000 per year for 7 years. If you feel that the appropriate discount rate is 11%, what is the investment worth to you today?

You have a rich uncle who has offered you some money upon successfully completing your accounting course. Assuming an annual interest rate of 8%, which alternative should you choose? Show your work for each alternative

$30,000 now

$6,000 a year for 6 years, with the first payment at the end of the first year

$4,000 a year for 5 years with the first payment made at the end of year 1, and then $19,000 at the end of the 6^th year.