Darren went bungee jumping . The bridge he stood on was 1,000 meters off the ground. When stretched out, the bungee cord would stretch to a maximum of 900 meters . On the initial fall , Darren fell the full 900 meters , then rose 890 meters , then fell 880 meters , then rose 870 meters . On this last rise , how far was Darren from the bottom of the bridge ?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.