Jamie is hiking up a small mountain. He climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. After that, he hikes down at the same rate to the base of the mountain. The equation that can be used to find the number of hours, t, after which Jamie’s distance from the peak will be 900 feet is -blank-. Jamie will be 900 feet from the peak after -blank- hours and after -blank- hours.