Hello, I'm doing an AP Cal AB practice test, and I'm having trouble with one of the problems. I think that I'm solving the problem correctly, but I must be doing something wrong since my answer is not one of the choices. Seeing how this was on a previous AP exam, I don't think it's likely that the choices were written incorrectly. Will you check over my work?

http://i13.photobucket.com/albums/a2...g?t=1262380909