On Jan 21, 2013, at 2:37 PM, Richard Strausz <Richard.Strausz@farmington.k12.mi.us> wrote:

I can't speak for the students, but I was an incorrect solver too (2 errors), because of a lack of tidy record keeping and double checking...

I have reviewed enough exams and "clever" exams to know that neatness isn't the deciding factor in the results. This particular problem has a myriad of redundancies built into it, and an answer checker to boot. Can you show us your work Richard and how two errors made it to the end?

Bob Hansen