Question

fill in the blank to describe this inequality with interval notation. x < 4 ? -∞, 4

Explanation:

Step1: Recall interval - notation rules

In interval notation, for an open - ended interval starting from negative infinity and going up to a value (but not including that value), we use parentheses for the non - inclusive end. Since negative infinity is not a real number and $x<4$ (not $x\leq4$), we use parentheses for both ends.

Answer:

$(-\infty,4)$