tell whether the given situation represent a quadratic function or not. write yes or no.

1.the maximum area of a rectangular cardboard that can be frame using 140 inches of border materials.
2.jeepney fare J for h kilometers at a flag down rate at P10 and P0.50 per succeding kilometer.
3.shot put-throw can be modeled using the equation y = -0.0241x² + x + 5.5,where x is the distance traveled and y is the height.​