Investment X will pay you $75,000 in 6 years while Investment Y will pay you $9000 a year for 8 years. If your required return is 6.5%, which is the best investment (show what you are comparing)?

You can choose between receiving $150,000 today or $24,000 a year over the next 8 years. If your rate of return is 5.4%, which is the best choice? (show what you are comparing)