The question is in a screenshot ty

The correct answer would be D. We know that A is incorrect because A shows that she would study for less than 1 1/4 hours. We know that B is incorrect because this shows that she can study exactly 1 1/4 hours. C is incorrect because even though the inequality is right, there are only 24 hours in a day so she cannot study up to 30 hours in one night.

Hope this helps

F(x) = -3 * 2 - 6x
So f(-6) = -6 - 6 * -6
= -6 + 36 = 30