kcruz99
  • kcruz99
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 A-12 B-18 C-24 D-6
Mathematics
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SOLVED
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katieb
  • katieb
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chrisdbest
  • chrisdbest
Looks like D is the closest
Nurali
  • Nurali
4*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
kcruz99
  • kcruz99
Thank you so much!

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Nurali
  • Nurali
My Pleasure.
Nurali
  • Nurali
Welcome to Openstudy.
Nurali
  • Nurali
Medal?
chrisdbest
  • chrisdbest
Can I get a medal?
chrisdbest
  • chrisdbest
@Nurali I need the medal more than you do.. lol

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