At noon one day, Allie left home to make a long bike
ride to the family camp on Mud Lake, a distance of 100 km.
Later in the day, the rest of the family packed some things
into their van and drove to the lake along Allie's bike route.
They overtook Allie after driving for 1.2 hrs, stopped long
enough to put Allie and bicycle in the van, and continued
to the camp. Refer to the graph as you answer the following
questions about the day's events: