So, while it is safe to assume that at some point before the end of the semester, we will have to figure out what discount rate to use, How do we come up with that rate, the "appropriate Risk Adjusted discount rate?" We have not looked at "risk free" projects, so that is not the rate. We are not investing in the Market as a whole, so we are not going to use the "Market rate of return." So, who sets the rate we should use, how and why? From where does it come