Question

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

x + 8 > 20 and x + 8 ≤ 28

20 < x + 8 ≤ 28

12 < x and x ≤ 20

A number line with an open circle on 12, shading to the left, and a closed circle on 20, shading to the right.

A number line with an open circle on 12, a closed circle on 20, and shading in between.

My answer is A number line with an open circle on 12, shading to the left, and a closed circle on 20, shading to the right.

Am I right? :)

Answer 1

That would be incorrect.

Answer 2

oh

Answer 3

A number line with an open circle on 12, a closed circle on 20, and shading in between?

Answer 4

Yes. Graph them both separately and see where they intersect to make it more clear.

Answer 5

ok thank you so much! :)