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August 23, 2014

August 23, 2014

Posted by **james** on Wednesday, December 10, 2008 at 9:43pm.

a)write and equation that models the population of the town

b)how long will it take for the population to decline to one quarter of its current population?

c)calculate the approx. instantaneuos rate of change at 5 years.

- aadvanced functions HELP! -
**Reiny**, Wednesday, December 10, 2008 at 9:52pma) I would write

P(n) = 12000(.982)^n where n is the number of years from the present

for b)

solve .25 = (.982)^n

I assume you know how to do logs.

c) have we established if you know Calculus?

That will determine how to answer that.

- aadvanced functions HELP! -
**james**, Wednesday, December 10, 2008 at 10:14pmnope i don't, the school makes it manditory to take advanced functions before calculus

- aadvanced functions HELP! -
**Reiny**, Thursday, December 11, 2008 at 9:17amin that case I would take something like

(P(5.01) - P(5))/(5.01 - 5)

= -199

so at the 5 year point, the population is decreasing at appr 200 people/year

- aadvanced functions HELP! -

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