3 years ago

At the beginning of 2012 Jacobs savings account had 675.20

Mathematics

1 answer:

OLEGan [10]3 years ago

7 0

Thanks for the update but uh... Is there a question? If you could comment the options on my reply that would be great.

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3 years ago

a culture started with 4,000 bacteria. after 7 hours,it grew to 5,200 bacteria. Predict how many bacteria will be present after

serious [3.7K]

Start with trying to figure out rate (r):
P = i•e^rt
5200 = 4000•e^(r•7)
5200/4000 = 1.3 = e^7r
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.262 = 7r•1, because the ln (e) = 1
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Now that you have the rate, plug in that for r and 9 hours as the new t, with again our 4200 as the i
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4 years ago

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