2. What is the maturity value of an annuity if you contribute $250 quarterly for 10 years when the interest rate is 8%? 3. What is the maturity value of a 6.25% annuity if you contribute $500 monthly for 3 years? 4. Suppose you decide to contribute $75 weekly into your annuity which pays 5%. How much will you have in 45 years? 5. To the nearest penny, how much would you need to contribute semiannually to a 5% annuity to have $30,000 in eight (8) years? 6. Grandpa wishes to establish a $200,000 college fund for his new granddaughter. The finds a 5.35% annuity and plans to contribute monthly for the next 18 years. How much are his monthly payments?