An air traffic controller is tracking two planes. To start, Plane A was at an altitude of 700 meters, and Plane B was at an altitude of 424 meters. Plane A is gaining altitude at 16 meters per second, and Plane B is gaining altitude at 22 meters per second. For each plane, write an expression for the altitude of the plane after x seconds. Write an equation to show when the two planes would be at the same altitude.