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Question 127497: This problem is not from my textbook it is a worksheet problem.
The instantaneous growth rate of a population is the rate at which it is growing at every instant in time. The instantaneous growth rate r of a colony of bacteria t hours after the start of an experiment is given by the function r=0.01t3-0.03t2+0.08 for 0 is less than or equal to t less than or equal to 7. Find the times for which the instantaneous growth rate is zero.
The answer choices are
2 sec and 4 sec
1 sec, 2 sec, and 4 sec
1 sec
1 sec and 4 sec
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The instantaneous growth rate of a population is the rate at which it is growing at every instant in time. The instantaneous growth rate r of a colony of bacteria t hours after the start of an experiment is given by the function r=0.01t3-0.03t2+0.08 for 0 is less than or equal to t less than or equal to 7. Find the times for which the instantaneous growth rate is zero
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0.01t^3-0.03t^2+0.08 = 0
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Comment: I have seen this problem posted before. You are missing
a term on your equation.
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Cheers,
Stan H.
The answer choices are
2 sec and 4 sec
1 sec, 2 sec, and 4 sec
1 sec
1 sec and 4 sec
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