Maka nilai (g invers o f)(1) adalah... Jawaban yg benar (B), siapapun yg tau caranya tolong jawab ya

f(x - 1) = x + 2
Misal (x - 1) = a => x = a + 1
f(a) = (a + 1) + 2
f(a) = a + 3
f(1) = 1 + 3 = 4

g(x) = (2 - x)/(x + 3) = (-x + 2)/(x + 3)
g^-1(x) = (-3x + 2)/(x + 1)
RUMUS : f(x) = (ax + b)/(cx + d) => f^-1(x) = (-dx + b)/(cx - a)

(g^-1 o f)(1) = g^-1(f(1)) = g^-1(4) = (-3.4 + 2)/(4 + 1) = (-12 + 2)/5 = -2