Mary goes on a bicycle ride. She starts from her house and rides
in a straight line east. She rides for two hours at a rate of 10 miles per hour and then
stops and eats lunch for an hour. Then she walks east for an hour at a rate of 4 miles per
hour. After walking, she turns around and rides home at a rate of 12 miles per hour.
When she arrives at home, she goes inside her house and rests for an hour.
Construct a careful graph of this story. Clearly label each axis and the units you are
using.