A new computer system will require an initial outlay of $20,000, but it will increase the firm's cash flows by $4,000 a year for each of the next 8 years. a. Calculate the NPV and decide if the system is worth installing if the required rate of return is 9%. Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places. b. Calculate the NPV and decide if the system is worth installing if the required rate of return is 14%. Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places