You need to be patient and wait for someone to get to your question instead of posting it twice. Not only do we not exactly have tons of people who can do this, but it's also Saturday night. :-)
PV of annuity is:
^{-n}}i\right))
where i = interest rate per compounding period, and n = number of periods. (Since yours is annual, i is just the annual rate and n is the number of years.)
Don't let them listing the investment amounts as year 0 throw you off. The present value of something from today is itself. That is not part of your present value calculations, only the future cash flows.
NPV is the
difference between the PV of your future cash flows and the initial investment. (Hence,
net present value.) You're looking at how your invested amount compares with what you get out of it in the future. But since those are in the future, you have to get the present value of them first and put them on "equal footing."
I don't know IRR. I'm an accounting person, and while there are crossovers, IRR isn't one I do. So you'll have to wait for someone else on that one.
Linear Mode
