{x+2y=11
x-4y=2

{y=-x+1
y=2x+1

{ y= -2x+7
-3x+y=-8

{4x-y=7
-6x+2y=8

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.

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.