Answer:
x
Explanation:
In order to find g(f(x)), imagine that f(x) is one big single thing, ignore all the numbers and x inside. For g(f(x)), it means that the x in the g(x) function, is replaced by f(x) function.
So therefore, the correct method to find the answer is just to substitute the whole f(x) function (no need to change anything inside) into the “x” in the g(x) function.
g(f(x)) = [(3x+4) - 4] / 3
= 3x / 3
= x