How do you solve 834 divided by 4 using the area

Which of the following contains a variable?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)