Find the required value for each problem. Show the formula used and the computations for each problem.

1-Jinny Swenson has the opportunity to make an investment that requires a payment of $ 750 per year for the next twelve years. If the investment is made at an interest rate of 8%, what is the value of that investment today? 2. What is the present value of an investment that guarantees a payment of $ 22,500 per year for the next five years if the annual compound interest rate is 15%? 3. Mike Thirt is planning to invest $ 25,000 annually for the next seven years, an investment that will pay him an annual compound interest of 11.4%. How much money will Roberto have at the end of the seven years? 4. Jamie Jhonson is 25 years old and is planning to invest $ 3,000 annually in an IRA that pays 9.75% compound interest annually, until she retires at age 65. How much money will Cecilia have for her retirement?