Refer to functions $m$ and $n$. Find the function $(n \circ m)(x)$ and write the domain in interval notation. Write any number in the intervals as an integer or a simplified fraction. \[ m(x)=\sqrt{x+7} \quad n(x)=x+7 \] Part: $0 / 2$ Part 1 of 2 \[ (n \circ m)(x)= \]

Step 1 ：Let's find the function \((n \circ m)(x)\).

Step 2 ：\((n \circ m)(x)\) represents the composition of functions \(n\) and \(m\).

Step 3 ：First, apply \(m(x)\) to \(x\), which gives us \(\sqrt{x+7}\).

Step 4 ：Then, apply \(n(x)\) to the result, which gives us \((\sqrt{x+7})+7\).

Step 5 ：So, the function \((n \circ m)(x)\) is \(\sqrt{x+7}+7\).

Step 6 ：\(\boxed{\sqrt{x+7}+7}\) is the final answer.