X^3 + 7*x^2 + -16*x-112
=(x + 4)*(x + 7)*(x - 4)
Answer:
The wide of river is 
Step-by-step explanation:
In this problem we know that
Triangles DEG and DEF are congruent by ASA (Angle-Side-Angle) Congruence
therefore
EG=EF

I think the answer is that they are parallel
B :) open circle means inequality and it needs to be at least 3 so the line has to increase, meaning the arrow is going right.