2 /2 100% + 3. A hot air balloon is released from the top of a building that is 70 ft high. The balloon rises at a constant rate. After 5 seconds, the height of the balloon is 100 ft. Time t Height 0 70 5 100 (a) Find an equation that gives the height of the balloon since the time of its release. (b) Determine the height of the balloon 15 seconds after its release. (c) How long does it take for the balloon to reach a height of 150 ft