Need an answer to this (all help appreciated)

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Common binomial factor of 6x(3x+7)+5(3x+7)

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)