two friends agree to split the dring from philadelphia, pennsyvania to Denver, colorado. one friend drives at an average speed of 60mi/h. the other friends drives at an average speed of 55mi/h. they want to drive at least 500 miles per day. they plan to spend no more than 10 hours driving each day. The friend who drivers slower wants to drive fewer hours. What is a graph showing how they can split the driving each day