State 1: A hot air balloon leaves the ground and ascends at a rate of 6 feet per second for 3 minutes. 1 minute = 60 seconds 3 minutes = 180 seconds If it's rate of is 6 feet per second Last of 3 minutes, it will ascend (180 seconds x 6 feet) 1080 feet.seconds. That is we can write +1080 feet.seconds
State 2: Then it descends at a rate of 3 feet per second for 2 minutes. 2 minutes = 120 seconds If it's rate of is 3 feet per second Last of 3 minutes, it will descent (120 seconds x 3 feet) 360 feet.seconds that is we can write -360 feet.seconds
State 3: It ascends at a rate of 4 feet per second for 5 minutes. 5 minutes = 300 seconds If it's rate of is 4 feet per second Last of 5 minutes, it will ascent (300 seconds x 4 feet) 1200 feet.seconds that is we can write +1200 feet.seconds
