Question

Functions help.

Questions are posted below. Will medal.

Answer 1

Well, if it's a greater than or equal to sign, it will be a [ ] behind the number. If it's just equal to, it'll have ( ).

Since the first one keeps on going on negatively, it is (-∞
It is less than or equal to -3, so the first one is (-∞, -3]

The second one is greater than, but NOT equal to -1, so it is (-1
It goes on for infinity, so the whole interval notation should be (-1, ∞) The infinity is negative.

The U means union, or in other words: or
The ∩ means intersect, or in other words: and

Since the 2 things don't intersect, it's U

So the answer is (-∞, -3] U (-1, ∞), or the last answer!