Solve this linear equation for x: 7 + 4 (5/4x - 1) = 18

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.

Find the solution of system of equation y= x-4 y=4x+2

Find the solutions for a triangle with a =16, c =12, and b = 63º