Dear Robert, Please consult https://sites.math.rutgers.edu/~zeilberg/Hist21/mt2S.pdf for the full solutions. #6 was not part of the homework, that even thogh you got it wrong, I disregarded it. You got 95 points (out of 110). (95/110)*120=103.6, so youg got 104 out of 120 Here is what you got wrong: #3(b): -5 points #8: -5 points (when did Heron live?) #11(b): -5 points Best wishes, Dr. Z.