Diketahui F(x)=2x+5 g(x)=-3x-4 ditanya: a) fog (x) b) gof(-3)

f(x) = 2x + 5
g(x) = -3x - 4

(fog)(x)
= 2(-3x - 4) + 5
= -6x - 8 + 5
= -6x - 3

f(-3) = 2(-3) + 5
f(-3) = -6 + 5
f(-3) = -1

(gof)(-3)
= g(f(-3))
= g(-1)
= -3(-1) - 4
= 3 - 4
= -1