7. You need $25,000 a year. You need this to last for 20 years. The guaranteed rate is 10%. How much must you invest today? 8. You need $50,000 a year. You need this to last for 30 years. The guaranteed rate is 6%. How much must you invest today?

7. You need $25,000 a year. You need this to last for 20 years. The guaranteed rate is 10%. How much must you invest today? 8. You need $50,000 a year. You need this to last for 30 years. The guaranteed rate is 6%. How much must you invest today