Question

If f(x) =3x+4/5x-7. And g(x) =7x+4/5x-3 find fog(x)

Answer 1

fog(x)=f[g(x)]

f[7x+4/5x-3]+

3[7x+4/5x-3] +4/5[7x+4/5x-3]-7

[21+28/5]x +[12/5+ 16/25]+[-9-12/5-7]

i hope it will help you