Please help

Points W, X, Z are collinear. Point W is between X and Z. XZ = 10x + 50, WZ = 8X - 2,
and WX = 4X - 2.


Use the information above. Is W the midpoint of XZ?


No, W is not the midpoint of XZ because XW = 106 and WZ = 214


Yes, W is the midpoint of XZ because XW ~ W2.


No, W is not the midpoint of XZ because XW = 85 and WZ = 150


Yes, W is the midpoint of XZ because XW is = XZ.