Well, your equation y=3/SQRT(3x+4) should be rationalized, but that's not what you want.
If f(x) = 3/SQRT(x+4) and g(x) = 3x
f(g(x)) then = 3/SQRT(3x+4), but rationalizing this = 3SQRT(3x+4)/(3x+4)
It refers to the number of times a number is being multiplied by itself ... Ex: two to the fourth power
4 would be the exponent
Answer:

Step-by-step explanation:

The answer to your question is b