Find f (x) and g (x) so that the function can be described as y=f (g (x)). Y=3/sqrt 3x+4

Given that y=f (g (x)) this implies that y is formed by composition of the function of the functions f (x) and g (x) given by f ο g (x).

thus:

y=f (g (x)) = 3 / (sqrt 3x) + 4

breaking down the above it implies that the functions f (x) and g (x) will be:

f (x) = x+4

g (x) = 3 / (sqrt 3x)