An estimate of 3 out of 25 people are left handed

How do you determine if an ordered pair is a solution to a given equation?

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?

Which of the following graphs could represent a cubic function?