3. How much is an annuity of $663.01 that lasts for 26 years' worth at a discount rate of 6.4%? 4. A cashflow grows by 2.3% per year. The cashflow starts a year from today and pays $274.83. The interest rate is 7.5%. What is it's value today? 5. What is the value of a perpetuity of $178.47? The discount rate is 1.4%. 1. You are saving money to buy a car. If you save $310 per month starting one month from now at an interest rate of 6%, how much will you be able to spend on the car after saving for 4 years? a. $23,478.46 b. $10,062.20 C. $20,124.40 d. $16,770.33