Round final answers to 3 decimal places. a. At t= 0 there were 140 million bacteria cells in a petri dish. After 6 hours, there were 320 million cells.

If the population grew exponentially for t 0... ...how many cells were in the dish 11 hours after the experiment began? ...after how many hours will there be 1 billion cells?

b. The half life of a substance is the time it takes for half of the substance to decay. The half life of Carbon14 is 5568 years. If the decay is exponential...

what percentage of a Carbon14 specimen decays in 100 years?

...how many years does it take for 90% of a Carbon14 specimen to decay