Question

using a number line, find both the intersection and the union of the following interval: (-∞, 7) and [-5, +∞)

Answer 1

Explanation:

the intersection of the interval: (-∞, 7) and [-5, +∞)

is [-5, 7)

and the union of the interval: (-∞, 7) and [-5, +∞)

is (-oo, +oo)