A = (0, 48)
B = (3, 47)
D = (9, 43)
E = (12, 41.2)
F = (15, 40)
G = (18, 38.5)
H = (21, 37.2)
I = (24, 36)
J = (27, 35)
C = (6, 44.8)
K = (30, 34.2)
f(x) = (log(x / 150) / log(0.1) * 20) + 20
g(x) = (-2 * x^(0.9)) + x / 1.1 + 49
h(x) = If[0 ≤ x ≤ Infinity,0.975^(x - 133) + 20]
a: y = (h'(0) * (x - 0)) + h(0)
b: y = (h'(3) * (x - 3)) + h(3)
c: y = (h'(6) * (x - 6)) + h(6)
d: y = (h'(9) * (x - 9)) + h(9)
e: y = (h'(12) * (x - 12)) + h(12)
i: y = (h'(15) * (x - 15)) + h(15)
j: y = (h'(18) * (x - 18)) + h(18)
l: y = (h'(21) * (x - 21)) + h(21)
m: y = (h'(24) * (x - 24)) + h(24)
n: y = (h'(27) * (x - 27)) + h(27)
q: y = (h'(30) * (x - 30)) + h(30)
L: (0.975^((-133)) + 20, h'(0))
M: (0.975^((-130)) + 20, h'(3))
N: (0.975^(6 - 133) + 20, h'(6))
O: (0.975^(9 - 133) + 20, h'(9))
P: (0.975^(12 - 133) + 20, h'(12))
Q: (0.975^(15 - 133) + 20, h'(15))
R: (0.975^(18 - 133) + 20, h'(18))
S: (0.975^(21 - 133) + 20, h'(21))
T: (0.975^(24 - 133) + 20, h'(24))
U: (0.975^(27 - 133) + 20, h'(27))
V: (0.975^(30 - 133) + 20, h'(30))
p(x) = If[20 ≤ x < 49,((20 * (-h'(0))) + (h'(0) * x)) / 0.975^((-133))]