Noelle stands at the edge of a cliff and drops a rock. The height of the rock, in meters, is given by the function f(x)=-4.9x + 17, where x is the number of seconds after Noelle releases her rock Cesar, who is standing nearby on the ground, throws a rock straight up in the air. The height of Cesar's rock, in meters, is given by the function g(x)=-4.92 +13z, where x is the number of seconds after he releases his rock There is a moment when the rocks are at the same height. What is this height? Enter your answer, rounded to the nearest tenth of a meter, in the box.