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

the population of a town is decreasing at a rate of 1.8% per year. The current population of the own in 12000.

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 9:52pm
a) 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 10:14pm
nope i don't, the school makes it manditory to take advanced functions before calculus

## Answer This Question

## Related Questions

- math - the population of a town is declining at a rate of 4.1% per year. the ...
- math - The population of a small town is modelled by the function p(t)= 20(4t+3...
- MATH - 4. The population of a small town is modelled by the function p(t)= 20(4t...
- MATH - 4. The population of a small town is modelled by the function p(t)= 20(4t...
- Math - The population of a small Midwestern town is 4500 The population is ...
- Advance Functions - The population of a small town is modeled by the function p(...
- c++ - Write a C++ program that reads the population of town A and its growth ...
- Math - The population of the town increase at the rate of 4 percent every year...
- algebra - A town has a population of 8400 in 1990. Fifteen years later, its ...
- Math - The population of a town in 1920 was 3500 people. The town's population ...

More Related Questions