Question

Which expresses the inequality x greater than or equal to -4 in interval notation?

Answer 1

What are the options?

Answer 2

\[[-4,+\infty)\]

Answer 3

We use square brackets for when it is equal, in this case, x can be equal to -4, but x cannot be equal to infinity, since infinity is not a number. so we use round brackets at the end of that.