You only need to look at the y intercepts.
-11 - -7 is -4, but you can't have a negative distance so it's just 4
So since x= sand bags replace x with 0 so 7y=105 is left divide by 7 and you get y=15 so 15 bags
4 x 28 = 112
Hope that helped! (:
Answer:
Since GI bisects that means the angle is cut into 2 equal angles or
DGI = IGH
So
x - 3 = 2x - 13
Solve for x
13 - 3 = 2x - x
10 = x
x = 10