Question

Please help. Functions and Relations. Which value of x is in the domain of the function shown below?

Answer 1

Given:

Function is

$f(x)=\sqrt{x-15}$

Required:

Which value of x is in the domain of function.

Explanation:

$\begin{gathered} \text{ We need } \\ x-15\ge0 \\ x\ge15 \end{gathered}$

Answer:

Option A is correct.