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1. The problem statement, all variables and given/known data

the total number of people(in millions) present in a population at a given time is given by the function:

2t(5t+9)^1/2+12

where t represents time (in hours) find the rate in change of the population after 2.5 hours...

2. Relevant equations

3. The attempt at a solution

im so confused do i find the derivative ?

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# Homework Help: Rate of change derivative?

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