The height after t seconds of an object projected upward with an initial velocity of 48 feet per second from a 210-foot tower can be modeled by h = -16t + 48t + 210. The height of a neighboring 50-foot tall building is modeled by the equation h = 50. The time () when the object will be at the height as the building is found to be ta-2 and t = 5. Which statement BEST describes the validity of these solutions?