Need this for work plz help me

Which is f(5) for the function –2x2 + 2x - 3?

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?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?