$\"\"$

Let s be the speed of vehicle.

The maximum speed of car is 65 miles per hour.

The maximum speed of tractor trailer is 55 miles per hour.

The minimum speed for all vehicles is 45 miles per hour.

The word $\"\"$ maximum $\"\"$ means less than or equal and its symbol is $\"\"$ .

The word $\"\"$ minimum $\"\"$ means greater than or equal and its symbol is $\"\"$ .

The words $\"\"$ the allowable speed for a car on interstate highway $\"\"$ represent the inequality $\"\"$ . $\"\"$

Graph the solution set for each inequality and find their intersection. $\"compound$

Observe the graph, the closed circle means that $\"\"$ are solutions of the inequality. $\"\"$

The solution set is $\"\"$ and its graph is $\"compound$