Tentukan nilai jika komposisi berikut jika f (x)=7x-6 g (x)=2x+3 a.fog (x) b.fog(-2) c.gof (x) d.gof (0)

a. fog (x ) = 7.(2x+3)-6 = 14x+21- 6 = 14x +15
b. fog (-2) = 14.-2 +15 = -28+15 = -13
c. gof (x) = 2(7x-6)+3 = 14x-12+3 = 14x-9
d. gof (0) = 14.0-9 = -9