S sonpat Full Member 7+ Year Member Joined Sep 25, 2015 Messages 28 Reaction score 0 Jun 12, 2018 #1 Members don't see this ad. I started doing some Khan Academy problems and the Bio ones seem reasonable enough, but the Chem/ Physics problems have me going crazy. Anyone know how representative these are? I'm starting to panic!
Members don't see this ad. I started doing some Khan Academy problems and the Bio ones seem reasonable enough, but the Chem/ Physics problems have me going crazy. Anyone know how representative these are? I'm starting to panic!