A: (0, 0)
B: (3, 331.5)
C: (6, 672)
D: (8, 864)
E: (10, 1000)
F: (12, 1056)
G: (14, 1008)
H: (16, 832)
I: (18, 504)
J: (20, 0)
V(b) = (((-(1 / 2)) * (b * (b + 10))) * (b - 20))