Question

for f(x)=3x-7 and g(x)-2x-6 find (f o g)(4)

Answer 1

(fog)= 3(2x-6)-7
then just plug in 4

Answer 2

(fog)(4)=f(g(4))
so first calculate g(4) which is =2*4-6=8-6=2
put value of g(4)=2
f(g(4))=f(2)=3*2-7=6-7=-1

Answer 3

thanks