SOLUTION: The population of a Midwest industrial town decreased from 224000 to 219000 in just 4 years. Assuming that this trend​ continues, what will the population be after an additional

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The population of a Midwest industrial town decreased from 224000 to 219000 in just 4 years. Assuming that this trend​ continues, what will the population be after an additional       Log On


   

Question 1182706: The population of a Midwest industrial town decreased from 224000 to 219000 in just 4 years. Assuming that this trend​ continues, what will the population be after an additional 4 ​years?
Found 3 solutions by ikleyn, greenestamps, josgarithmetic:
Answer by ikleyn(52898) About Me  (Show Source):
You can put this solution on YOUR website!
.

What precisely trend do you mean ?


There are at least two standard different trends, associated with the given data.


///////////


This person can not / (is not able) to formulate math problems correctly, and it is FIRST THING which he (or she) should learn,

when he (or she) comes to the forum with his (or her) own composed problems.



Answer by greenestamps(13214) About Me  (Show Source):
You can put this solution on YOUR website!


What the other tutor means is that you need to specify whether the decrease is linear or exponential, or perhaps yet something else.

Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
One of these is what you would likely want.

-----------

p=ab%5Ex
219000=224000b%5E4
b%5E4=219%2F224
b=0.99437
highlight_green%28p=22400%280.99437%29%5Ex%29

-------------
-------------

p=mx%2Bb
p=%28%28219000-224000%29%2F4%29x%2Bb
highlight_green%28p=-1250x%2B224000%29

-------------