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f(x) = 3x - 4
g(x) = 2x + p
f o g(x) = 3(2x + p) - 4
f o g(x) = 6x + 3p - 4
g o f(x) = 2(3x - 4) + p
g o f(x) = 6x - 8 + p
f o g(x) = g o f(x)
6x + 3p - 4 = 6x - 8 + p
2p = -4
p = -2
OPTION D
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f(x) = x + 3
g(x) = 2x + 1
f o g(x) = 2x + 1 + 3
f o g(x) = 2x + 4
f o g(x) = 2x + 4
y = 2x + 4
2x = y - 4
x = (y - 4)/2
Maka f o g-'(x) = (x - 4) / 2
OPTION A
#DONE