Answer
$[-2,\infty)$.
Work Step by Step
$-6x+3\leq 15$
subtract 3 from both sides
$-6x\leq 12$
Divide both sides with -6. Since it is negative, the sign changes
$x\geq-2$
The solution set is $[-2,\infty)$.
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.