anonymous
  • anonymous
Notice of a town meeting is spread by word of mouth to the town's 4000 residents. After t days, the number of people who know about the meeting is expressed by the function f(t) = 4000/(1 + 40 e^(-0.4 t)) How long will it take for half of the townspeople to have heard about the meeting?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
right now im at: f(t) = 4000/(1 + 40 e^(-0.4 t)).
anonymous
  • anonymous
do i plug in something for t then solve?
anonymous
  • anonymous
2, 000 = 4000/(1 + 40 e^(-0.4 t))

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anonymous
  • anonymous
yeah since it says half of pop but what then?
anonymous
  • anonymous
Calculate!
anonymous
  • anonymous
f(t) = 2000/(1 + 40 e^(-0.4 t)).
anonymous
  • anonymous
1 = 2/[ 1 + 40 e^(-0.4 t) ]
anonymous
  • anonymous
arent i supposed to plug in a number for t?
anonymous
  • anonymous
Did you see I plug 2,000 for f(t) which number of half of town?
anonymous
  • anonymous
Then find t?
anonymous
  • anonymous
yeah but i dont plug that in 2000 for t though right?
anonymous
  • anonymous
Of cousrse not, because 2,000 is number of person f (t), not time t!
anonymous
  • anonymous
Let me know your result!
anonymous
  • anonymous
im lost
anonymous
  • anonymous
Firstly, do you know how to plug in ? Pls show me!

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