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26-11-2016
Mathematics

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If f(x) is the total number of bacteria present in a sample after x hours, which of the following statements best describes the meaning of f(2) = 12?

The total number of bacteria present in the sample after 12 hours is 2.
The total number of bacteria present in the sample after 6 hours is 2.
The total number of bacteria present in the sample after 2 hours is 12.
The total number of bacteria present in the sample after 6 hours is 12.

Respuesta :

26-11-2016

The total number of bacteria present in the sample after 2 hours is 12.

If f(x) is the total number of bacteria present in a sample after x hours,
f(2) = 12

so f(x) = 12, and x was 2 in this case

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