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The notes for the problem Four on the Road give a suggested approach for this problem.
Use of graphing software or graphical calculators to draw graphs representing the given information can give a lot of insight into what changes and what stays the same when the freedoms of the problem are explored.
On the Road
Age 14 to 16
Challenge Level 
The notes for the problem Four on the Road give a suggested approach for this problem.
Use of graphing software or graphical calculators to draw graphs representing the given information can give a lot of insight into what changes and what stays the same when the freedoms of the problem are explored.
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