Question

Which of the following is not an equivalent form of the compound inequality:
x + 8 > 20 and x + 8 <= 28

a) 20 < x + 8 <= 28

b) 12 < x and x <= 20

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

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