Question

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

x - 1 < -10 or x + 12 > 12

A. A number line with an open circle on -9, an open circle on 0, and shading in between.

B. x < -9 or x > 0

C. A number line with an open circle on -9, shading to the left, and an open circle on 0, shading to the right.

D. x > 0 or x < -9

Answer 1

x<-9 or x > 0
both circles are open
A is wrong since that is -9 <x < 0
B is right
C is the same as B and D so only A is wrong.

Answer 2

Thanks Satellite73!