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A certain type of bacteria, given a favorable growth medium, doubles in population every 6.5 hours. Given that there were approximately 100 bacteria to start with, how many bacteria will there be in a day and a half?

Answer :

A certain type of bacteria,

given a favorable growth

Medium, doubles in population every 6.5 hours. Given that there were approximately 100 bacteria to start with, how many bacteria will there be in a day and a half?

we have that

the exponential growth function that represent this situation is

[tex]y=100(2)^{(\frac{t}{6.5})}[/tex]

where

x is the number of hours

y is the total bacteria

so

For a day -------> t=24 hours

substitute

[tex]\begin{gathered} y=100(2)^{(\frac{24}{6.5})} \\ y=1,293\text{ bacteria} \end{gathered}[/tex]

For a half day -------> t=12 hours

substitute

[tex]\begin{gathered} y=100(2)^{(\frac{12}{6.5})} \\ y=360\text{ bacteria} \end{gathered}[/tex]

For a day and a half -------> t=36 hours

substitute

[tex]\begin{gathered} y=100(2)^{(\frac{36}{6.5})} \\ y=4,648\text{ bacteria} \end{gathered}[/tex]

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