An object is moving in a straight line. It initially travelz at a speed on 9 meters per second, and speeds up at a constant rate of 2 meters per second each second. Under such conditions, the distance (d), in meters, that the object travels is given by the equation 2 d t t=+ 9, where t is in seconds. According to this equation, how long will it take the object to travel 22 meters?