Question

Which of the following inequalities have -8 in its solution set?

A. 0 < x+4 < 1

B. Three less than a number is at least -5 and at most 2.

C. The sum of 8 times a number and 7 is between -1 and 1.

D. 3x ≥ 24 or 3x ≤ -24

Answer 1

We could solve each algebraically by substituting -8 into each inequality

Answer 2

First rewrite B and C into numbers