Ahot air balloon is launched at kirby park, and it ascends at a rate of 7200 feet per hour. at the same time, a second hot air balloon is launched at newman park, and it ascends at a rate of 4000 feet per hour. both of the balloons stop ascending after 30 minutes. the diagram shows the altitude of each park. are the hot air balloons ever at the same height at the same time?

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.