Question

Which notation is equivalent to the inequality -3 < x ≤ 7?

(1) [-3,7] (3) [-3,7)
(2) (-3,7] (4) (-3,7)

Answer 1

The notation that is equivalent to -3 < x ≤ 7 is (2) (-3, 7].

|---|---|---|---|---|---|---(---|---|---|---|---|---|---|---|---|---]---|---|---|
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10