The concentration of E. coli bacteria in a swimming area is monitored after a storm:
t(hr) 4 8 12 16 20 24
c(CFU/100 mL) 1590 1320 1000 900 650 560
The time is measured in hours following the end of the storm and the unit CFU is a "colony forming unit." Use this data to estimate (a) the concentration at the end of the storm (t = 0) and (b) the time at which the concentration will reach 200 CFU/100 mL. Note that your choice of model should be consistent with the fact that negative concentrations are impossible and that the bacteria concentration always decreases with time.
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