Answer
-108
Work Step by Step
We follow the directions to plug -6 in for x:
$f(-6)=-3(-6)^{2}\\\\=-3(36)\\\\=-108$
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.