Question

se f(x)=3x-4 e f(g(x)=x+4,quanto vale g(1/8)?

Answer 1

f (x)=3x-4 (I)
f (g(x)) = x+4 (II)
Troque x na primeira por
g(x) e iguale a f (g(x)).

3g(x)-4=x+4
3g(x)=x+8
g(x)=x/3 + 8/3
g(1/8)=65/24