How do i deteremine the internal rate of return of a problem. Lets say a company is justt starting and they need an initial outlay of $105,000 and will generate a net cash inflows of 19,000 per year for 9 years.

A) If the discount rate is 8 % then what is the NPR? (I understand how to do this and the following
B)What is the NPV using 14%
C)This projects internal rate of return is? (This is what i do not understand how to do)?