You are correct; it's 2.
I really just want to verify this for peace of mind, as I am beyond certain of my answer (I even ran it through C++ to verify my answer):
, simple enough right?
however the solutions shows it to be equal to 4.
Surely this is a mistake unless I'm completely missing something here.
That's what I figured.. I should really have more confidence in my brain. I'm one of those people that has the bad habit of double checking simple arithmetic (like 13 + 9) on a calculator.. this is coming from a 2nd year mechanical engineering student (no joke)