Mirrors on cars exist to

Mirrors exist on cars so objects behind or to the side of the vehicle are brought into the driver's view. (such as cars, bicyclists, etc.) These spots are normally referred to as "blind spots", which are locations outside of the driver's peripheral vision that are difficult to see.

no, it just either gets automatically 5 points to give away, or u can choose how many points u want to give but, the answerer only gets half