Find the domain and the range of the real function, `f(x)=(1)/(x+3)`.

Explanation

To find the domain and range of the function \( f(x) = \frac{1}{x + 3} \), we will follow these steps:

### Step 1: Determine the Domain
The domain of a function consists of all the possible input values (x-values) that will not make the function undefined.

1. The function \( f(x) = \frac{1}{x + 3} \) is undefined when the denominator is zero.
2. Set the denominator equal to zero:
\[
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