Question

Which of the following is not an equivalent form of the compound inequality

x - 1 < -11 or x + 12 > 14

A number line with an open circle on -10, an open circle on 2, and shading in between.

x < -10 or x > 2

A number line with an open circle on -10, shading to the left, and an open circle on 2, shading to the right.

x > 2 or x < -10

Answer 1

x - 1 < -11
x < -11 + 1
x < -10

x + 12 > 14
x > 14 - 12
x > 2

now we have x is less then -10 and greater then 2
The incorrect one is : a number line with open circle on -10, open circle on 2, and shading in between (2nd choice)