F(x) = If[x > 0, 10]
B(x) = If[x > 0, (2 * (x ≤ 100)) + (((0.1 * x) - 8) * (x > 100))]
P(x) = If[x > 0, ((0.2 * x) * (x ≤ 200)) + (((0.15 * x) + 10) * (x > 200))]