Tolong no.6 8 10 aja

no. 8
f (x) = 3x - 1
g (x) = 2x pngkat 2 + 3
(gof)(1)= ... ?
(gof)(1) = g(f(x)
= 2(3x-1)pgkat2 + 3
= 2(9x pngkat2 -6x + 1) + 3
= 18x pangkat2 - 12x + 2 + 3
= 18x pangkat2 - 12x +5
(gof)(1) = 18(1) pgkat 2 - 12(1) + 5
= 18-12+ 5
=11