The graph below models the parabolic trajectory of an object thrown from a height of 1.5 m toward a building located 15 m from the object's initial position. The object reaches a maximum height of 4 m after having travelled a distance of 5 m toward the wall of the building. Height (m) (0,1,5) 15 0 Height of Object as a Function of Horizontal Distance Travelled Building's Shadow (5,4) 15 Distance The triangular area on the plane represents the building's shadow, which is defined by the following inequalities:x15, y 0 and x - y 7. At what distance from the wall does the object enter the building's shadow?