anonymous
  • anonymous
a culture started with 4,000 bacteria. After 5 hours, it grew to 4,800 bacteria. Predict how many bacteria will be present after 15 hours. Round your answer to the nereast whole number. P=Ae^kt
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
pleasee help this is the last question i have to pass the test
anonymous
  • anonymous
@amistre64
anonymous
  • anonymous
well 5*3=15 so do 800*3 then do 2400+4000= what @saaaaaaammmmmmmmmm

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mathstudent55
  • mathstudent55
Plug in the known info to find k in the formula. Then rewrite the equation using the value of k you found and solve for P when t = 15. A is the starting amount P is the amount at t time \(\large P = Ae^{kt} \) \(\large 4800 = 4000e^{k \times 5} \) Find k.
anonymous
  • anonymous
Multiply 400 times 13 hours (400 bacteria every 2 hours), then add the 4000 in addition to it I got 9200 ...you have to round that though, which would be 9000 I believe.

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