Question

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

Answer 1

To determine when -8 is a solution, you will replace each variable with -8 and see which statements are true.

A. x + 4, -8 + 4 = -4, this is not in between 0 and 1
B. x - 3, -8 - 3 = -11, not between -5 and 2
C. 8x + 7, 8(-8) + 7 = -57 is not between -1 and 1
D. 3x, 3(-8) = -24 is equal to -24, so this one is true

A.  5x, 5(-6) = -30 is not less than -35 or greater than 35
B.  3x - 2, 3(-6) - 2 = -20 is not between -5 and 1
C.  3x + 5, 3(-6) + 5 = -13 is between -16 and 11
D.  x - 5, -6 - 5 = -11 is not between -8 and 3