Suppose ​p(t)=−0.39t3+106t2+7035t+90,000 is the population of a city t years after 1991.   a. Determine the average growth rate from 1991 to 2001. b. What was the growth

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Suppose
​p(t)=−0.39t3+106t2+7035t+90,000
is the population of a city t years after
1991.
 
a.
Determine the average growth rate from
1991
to
2001.
b.
What was the growth rate for this city in
1995
​(when
t=4​)?
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