Question #0bf4a

Oct 30, 2015

Answer:

$t \setminus \in \left[- 3 , \setminus \infty\right)$.

Explanation:

Divide both terms by $- 4$, keeping in mind that dividing both terms of an inequality by a negative number also means to invert the inequality symbol:

$- 4 t \setminus \le 12 \to t \setminus \ge - 3$.

And this is basically it: we've expressed our inequality as an interval: all the number greater than or equal to $- 3$, in interval notation

$t \setminus \in \left[- 3 , \setminus \infty\right)$.