An investment has an installed cost of $571,382. The cash flows over the four-year life of the investment are projected to be $200,584, $244,318, $192,674, and $160,313.

If the discount rate is zero, what is the NPV? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.). I just need help with the last quesion!

NPV $

If the discount rate is infinite, what is the NPV? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.)

NPV $

At what discount rate is the NPV just equal to zero? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Discount rate %