Friday

December 19, 2014

December 19, 2014

Posted by **Nick** on Saturday, March 5, 2011 at 10:42pm.

How do I determine the rate of change when the population when there are 5000 fish in the lake?

- calculus -
**bobpursley**, Saturday, March 5, 2011 at 10:52pmYou take the derivative of p

expand p

p=15(t^3+240+30t+8t^2)

p'=15(3t^2+30+16t)

in the first equation,p=5000, so you have to solve for t. A little algebra is required. Then, for the real t, put that in the p' equation

- calculus -
**Nick**, Saturday, March 5, 2011 at 10:54pmThat's what I have done, I have expanded it to get the derivative, but I am having problems solving for t.

**Answer this Question**

**Related Questions**

math - If P0 > c (which implies that −1 < a < 0), then the ...

Trigonometry - If P0 > c (which implies that −1 < a < 0), then ...

Please Help! Quadratic Eqautions - The population of a town P(t)is modelled by ...

PreCalculus - A lake formed by a newly constructed dam is stocked with 1,000 ...

Math help plz - To determine the number of fish in a lake , a conservationist ...

Population growth - The population P of a particular city, Metropia, is growing ...

Please Help! Quadratic Eqautions - The population of a town P(t)is modelled by ...

Ms. Sue can you answer this please - Damon had answer, but i just want to see if...

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...