Saturday
April 18, 2015

Homework Help: Maths

Posted by Mario on Tuesday, July 6, 2010 at 9:07am.

Hi, I have a formula for modelling the variation in population density in terms of distance from a town centre;

y= -3x^2 +6x+9

where y represents the population density (in thousands per km^2) and x represents the distance (in km) from the town centre

I have already constructed a parabola as part of the question its just the next bit I need some help on if possible?

When x = 2 and y =9 what does this mean in th context of the model?

How would i calculate the population density at the town centre?

What is the max population density predicted by the model and at what distance from the town centre would it occur?

For what range of distances fro the town centre might this model be useful?

Any help or guidance would be very much appreciated

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Ecology - What are the types of population density measure and how each may be ...
Math - The population, P (in thousands), of a town can be modeled by P= 2|t-6|+4...
Math - The population, P (in thousands), of a town can be modeled by P= 2|t-6|+4...
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...
Advance Functions - The population of a small town is modeled by the function p(...
8 math - Population density is described as the average number of people per ...
math - Suppose that the population of a town is described by P=0.16t^2=7.2t=100...
math - Suppose that the population of a town is described by P=0.16t^2+7.2t+100...

Members