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A Problem involving cubic function IRL:

A scientist was teaching elementary students about bacteria, in the microscope, it is observed that it has 2 bacteria. After an hour, the scientist came back and counted the number of bacteria, but this time, it is not 2 anymore, instead, it was now 8 bacteria. The scientist called the math teacher, from the basis of research the scientist collected, the math teacher was able to derive that the bacteria spreads at a function of f(t)=2^{3t}, where t is the number of hours.

Hope this helps =)
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... thank you