I think the answer is B.
6(-3)=-18, and y=2
so 6x-y=-18-2=-20
This requires you to find the volume of the cone.
The volume of a cone is 1/3 the area of the base (a circle) times the height of the cone, or 1/3(3.14)r^2 * h.
The radius of the base is 7.5/2 or 3.75.
V = 1/3(3.14 * 3.75^2) * 3.5
V = 1/3(44.16) * 3.5
V = 1/3*154.56
V = 51.5 cm^3 of feed
The value 9 because you add
