2 points extra credit: Solve the following system of equations. You may use substitution or elimination. To receive credit, you will turn in your work. 4 x + 4 y + z = 24 2 x − 4 y + z = 0 5 x − 4 y − 5 z = 12 Group of answer choices (6, 0, 0) (4, 2, 0) (-4, 0, 2) (8, -2, 0)