Question

which value of x is in the domain of f(x) = root x - 7a. x = 6b. x = 0c. c = -3d. x = 8

Answer 1

Solution

We want to find the domian of

$f(x)=\sqrt{x-7}$

The domain of the function is

$\begin{gathered} x-7\ge0 \\ \\ x\ge7 \end{gathered}$

So in the option any number greater than 7 belong to the domain and it is the answer

Therefore, the answer is

$8$