Find AC and round to the nearest hundredth

100 points, hi, i’m not sure how to get the equation from the graph and table.

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?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25