Which of the following inequalities has a solution set that, when graphed on the number line, is a single line segment of finite length?
A) x^4 >=(greater than or equal to) 1
B) x^3 =< 27
C) x^2 >= 16
D) 2 =< abs(x) =< 5
E) 2 =< 3x + 4 =< 6
Answer is E, don`t understand why it cant be D
Because it has two line segments, not one.
D translate to:
-5 <= x <= -2 and 2 <= x <= 5