Since x is never less than -4 but is equal to it at one point and is less than 0 in some points, the only possible answer and the correct answer is x ≥ -4.
So the domain to this graph is x ≥ -4.
The gcf of 12/15 is 3 (simplest terms is 4/5)
10 pounds use division , 20/2=10 pounds of apples total