Answer
$(-\infty,\infty)$
Work Step by Step
We are given the function:
$$f(x)=3^{x+6}.$$
The exponential function is defined for all real values of the exponent, therefore the domain of the function $f$ is:
$$(-\infty,\infty).$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.