Relax

Respuesta :

If the variable x has the value 10, then replace all x's with the value of x. Which is 10.

10/2 + 8 = 5 + 8 = 13

So, 13 is the answer.
so we substitute 10 for x 

order of operations :) 

(10/2)+8
5+8=13 
f(10)=13
:)