I'm really confused on this question..could anybody ?

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?