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kcruz99
 one year ago
A colony of bacteria is growing exponentially according to the function below, where t is in hours. About how many hours will it take for the population to reach 400?
B(t)=4*e^0.8t
A12
B18
C24
D6
kcruz99
 one year ago
A colony of bacteria is growing exponentially according to the function below, where t is in hours. About how many hours will it take for the population to reach 400? B(t)=4*e^0.8t A12 B18 C24 D6

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chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.0Looks like D is the closest

Nurali
 one year ago
Best ResponseYou've already chosen the best response.24*e^0.8t = 400 e^0.8t=100 ln (e ^ 0.8t) = ln (100) 0.8t * ln (e) = ln (100) 0.8t * 1 = ln (100) t = ln(100) / (0.8) = 1.25 * ln (100) t= 1.25 * 4.6 .: t=5.75≈6

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.0@Nurali I need the medal more than you do.. lol
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