1. The problem statement, all variables and given/known data http://img362.imageshack.us/img362/1465/problemcn2.jpg [Broken] http://g.imageshack.us/g.php?h=362&i=problemcn2.jpg [Broken] 2. Relevant equations http://img510.imageshack.us/img510/3137/formula1df4.jpg [Broken] http://g.imageshack.us/g.php?h=510&i=formula1df4.jpg [Broken] http://img411.imageshack.us/img411/7889/formula2mn1.jpg [Broken] http://g.imageshack.us/g.php?h=411&i=formula2mn1.jpg [Broken] 3. The attempt at a solution http://img380.imageshack.us/img380/5177/attemptsu1.jpg [Broken] http://g.imageshack.us/g.php?h=380&i=attemptsu1.jpg [Broken] As you can see, none of my calculations match. Please help anyone. I know this is very difficult to explain but I'm all ears. This question's been bothering me all afternoon. The curriculum does not explain it well. At all. Mega thanks in advance.