indicated by a minus sign. Do not round intermediate calculations. Pound yeute of retumin 15\%. (Negotive amount should be by minus sign. Do not round intermediate calculations. Round your answers to 2 decimal ploces.) How high can the discount rate be before you would reject the project? (Do not round intermediote calculations. Enter your inswer as a percent rounded to 2 decimal places.) next 7 years alculate the NPV and decide if the system is worth installing if the required rate of return is 15%. (Negative omount should be ated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places.)