Dear Edward,

 Please consult

https://sites.math.rutgers.edu/~zeilberg/Hist21/mt1S.pdf

for the full solutions.

You got  88  points (out of 120).

Here is what you got wrong:

#3: -10 points (wrong way, wrong answer)

#7: EF are sums of DISTINCT reciprocals: -2 points

#9: -10 points (see answer key)

#12: -10 points (see answer key)








 Best wishes,

   Dr. Z.