Mark is solving the following system (1)
X+ y + z = 2
3x+2y + Z = 8
4x-y-73= 16
(2)
(3)
Step 1: He multiplies equation (1) by 7 and adds it to equation (3)
Step 2: He multiplies equation (3) by 2 and adds it to equation (2)
Which statement explains Mark's mistake?

Solve |2x - 5| = 4 if anyone could , that would be great

Question 1(multiple choice worth 1 points)(07.06 mc)a group of students must collect at least $150 to organize a science fair. they have already collected $30. which graph best represents all remaining amounts of money, in dollars, that thestudents should still collect to organize the science fair? -210 -180 -150 - 120 -90-60 -300306090 120 150 180 210-210 -180 -150 - 120 -90 -60 -30 0 30 60 90 120 150 180 210-210 -180-150 - 120 -90-60-300 30 60 90 120 150 180 210-210 -180 -150 - 120.90 -60 -30 0 30 60 90 120 150 180 210

98 point question what is the record for most points in one