Distance traveled by the car is equal to the area under graph of the velocity function and above the time axis.

Find the distance traveled by the car using the mid point method by taking six rectangles.

Here time interval is $\"\"$ s.

Width of the interval is $\"\"$ .

Mid points are $\"\"$ and $\"\"$ .

Distance traveled by the car is

$\"\"$ .

Substitute corresponding velocity values by the graph.

$\"\"$

$\"\"$ .

Distance traveled by the car is $\"\"$ ft.