Respuesta :

Rewrite the question as 14/7*2 and you will get 4.
   So f(4) is your answer.
      Hope this helped.  :)

Answer: 2/7

Step-by-step explanation:

Fill in all the x's with 7 because x=7

So it'll look something like this

14/7^2 and 7^2 is 49

So 14/49 then you simplify that and it is 2/7