###### Exercise29

Change the following inequality from set-builder notation to interval notation:

\(\displaystyle{ \left\{ x \mid {{x}} \leq {-{\frac{2}{7}}} \right\} }\)

The interval notation is

Change the following inequality from set-builder notation to interval notation:

\(\displaystyle{ \left\{ x \mid {{x}} \leq {-{\frac{2}{7}}} \right\} }\)

The interval notation is