Question

If f(x) = x/2 + 8, what is f(x) when x=10?

Answer 1

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:

$\begin{gathered} f(x)=\frac{x}{2}+8 \\ f(10)=\frac{10}{2}+8 \\ f(10)=5+8 \\ f(10)=13 \end{gathered}$

So the value of f(x) when x = 10 is 13, therefore the answer is the third option.