tolong d bantu yaa, bsk di kmpl

jawaban no 9, maaf jika jawabannya slh

1) F (x) = (3x + 4) / (2x - 1)
y = (3x + 4) / (2x - 1)
y(2x - 1) = 3x + 4
2xy - y = 3x + 4
2xy - 3x = y + 4
x(2y - 3) = y + 4
x = (y + 4 ) / (2y - 3)

F^(-1)(x) = (x + 4) / (2x - 3) (B)

2)f(x) = 2x + 1
g(x) = 5x^2 + 3
h(x) = 7x
(f○g○h)(x)=.....
(g○h)(x) = g○(h(x))
= g○ (7x)
= 5(7x)^2 + 3
= 5(49x^2) + 3
= 245x^2 + 3
(f○g○h)(x) = f○((g○h)(x))
= f○(245x^2 + 3)
= 2(245x^2 +3) + 1
= 490x^2 + 6 + 1
= 490x^2 + 7 (A)