$\"\"$

Let x be the temperature inside a room.

The word $\"\"$ lower than $\"\"$ means $\"\"$ less than $\"\"$ represent the symbol is $\"\"$ .

The word $\"\"$ higher than $\"\"$ means $\"\"$ greater than $\"\"$ represent the symbol $\"\"$ .

The word $\"\"$ The temperature x is lower than $\"\"$ $\"\"$ represent the inequality $\"\"$ .

The word $\"\"$ The temperature x is higher than $\"\"$ $\"\"$ represent the inequality $\"\"$ .

The word $\"\"$ The temperature x is lower than $\"\"$ or the temperature x is higher than $\"\"$ $\"\"$ represent the compound inequality $\"\"$ . $\"\"$

The compound inequality is $\"\"$ .

The compound inequality $\"\"$ graph is

$\"compound$

Observe the graph, the open circle means that $\"\"$ are not a solutions of the inequality. $\"\"$

The compound inequality is $\"\"$ and its graph is

$\"compound$