Each of the Exercise describes a trip you made along a straight road connecting two cities...

Each of the Exercise describes a trip you made along a straight road connecting two cities 120 miles apart. Sketch the graph of the distance d from your starting point (in miles) as a function of the time t elapsed (in hours). Also describe the function d(t) symbolically.

Exercise

You traveled for l hour at 60 miles per hour, stopped for  hour while a herd of bison crossed the road, and then drove on toward your destination for the next hour at 60 miles per hour.