Question

Write each interval as an inequality:

(-1, 10]

[-3, 3]

(-infinity, 0] or (5, infinity)

[3, infinity)

(-infinity, 4)

[25, 50)

Answer 1

- 1 < x ≤ 10

- 3 ≤ x ≤ 3

- ∞ < x ≤ 0 or 5 < x < ∞

3 ≤ x < ∞

- ∞ < x < 4

25 ≤ x < 50

Explanation:

(-1, 10] gives the inequality - 1 < x ≤ 10

[-3, 3] gives the inequality - 3 ≤ x ≤ 3

(-infinity, 0] or (5, infinity) give the inequality - ∞ < x ≤ 0 or 5 < x < ∞

[3, infinity) gives the inequality 3 ≤ x < ∞

(-infinity, 4) gives the inequality - ∞ < x < 4

[25,50) gives the inequality 25 ≤ x < 50 (Answer)