Interesting problems ...
1) x > -3 ---> (-3, ∞) x ≤ 3 ---> (-∞, 3] or: union: (-3, ∞) ∪ (-∞, 3] = (-∞, ∞)
2) 4x + 3 ≤ 11 ---> x ≤ 2 ---> (-∞, 2]
6x > 25 ---> x > 4 1/6 ---> (4 1/6, ∞) or: union: (-∞, 2] ∪ (4 1/6, ∞)
3) 3x - 9 < -18 ---> x < -3 ---> (-∞, -3)
-6x + 2 > -28 ---> x < 5 ---> (-∞, 5) and: interesect: (-∞, -3) ∩ (-∞, 5) = (-∞, -3)
Interesting problems ...
1) x > -3 ---> (-3, ∞) x ≤ 3 ---> (-∞, 3] or: union: (-3, ∞) ∪ (-∞, 3] = (-∞, ∞)
2) 4x + 3 ≤ 11 ---> x ≤ 2 ---> (-∞, 2]
6x > 25 ---> x > 4 1/6 ---> (4 1/6, ∞) or: union: (-∞, 2] ∪ (4 1/6, ∞)
3) 3x - 9 < -18 ---> x < -3 ---> (-∞, -3)
-6x + 2 > -28 ---> x < 5 ---> (-∞, 5) and: interesect: (-∞, -3) ∩ (-∞, 5) = (-∞, -3)