In order to find the value of f(x) when x = 10, we just need to use this value of in the equation and then calculate its value:
[tex]\begin{gathered} f(x)=\frac{x}{2}+8 \\ f(10)=\frac{10}{2}+8 \\ f(10)=5+8 \\ f(10)=13 \end{gathered}[/tex]
So the value of f(x) when x = 10 is 13, therefore the answer is the third option.
