# Thread: Word problem >_<

1. ## Word problem >_<

I'm stuck on this word problem, I understand it, I'm just not sure how to get the answer >_<

In 1993, the population of a country was estimated at 5 million. For any subsequent year, the population, P(t) (in millions), can be modeled usuing the equation P(t)=250/5+44.99e^-0.0208t, where t is the number of years since 1993. Use a graphing calculator to estimate the year when the population will be 24 million.

I know, it's more like algebra review but it's in my PreCal summer assignment, so I just posted in the PreCal.
Thanks! :]

2. Originally Posted by OHHxDANGG
I'm stuck on this word problem, I understand it, I'm just not sure how to get the answer >_<

In 1993, the population of a country was estimated at 5 million. For any subsequent year, the population, P(t) (in millions), can be modeled usuing the equation P(t)=250/5+44.99e^-0.0208t, where t is the number of years since 1993. Use a graphing calculator to estimate the year when the population will be 24 million.

I know, it's more like algebra review but it's in my PreCal summer assignment, so I just posted in the PreCal.
Thanks! :]
Do you own an graphing calculator ? This question requires that you produce a graph of the function $\displaystyle P(t) = \frac{250}{5+44.99e^{-0.0208t}}$ and form your graph you need to estimate the value of t at which $\displaystyle P(t) = 24$

I've attached an image of the graph if you need it.

Bobak

3. Originally Posted by bobak
Do you own an graphing calculator ? This question requires that you produce a graph of the function $\displaystyle P(t) = \frac{250}{5+44.99e^{-0.0208t}}$ and form your graph you need to estimate the value of t at which $\displaystyle P(t) = 24$

I've attached an image of the graph if you need it.

Bobak
Yeah, I do. So what do I do now? Would it be in 7-8 years and add that onto 1993?

4. Originally Posted by OHHxDANGG
Yeah, I do. So what do I do now?
Well graphing interfaces vary form calculator to calculator. If you are unsure on how to use your calculator refer to its manual or post its make and model and maybe someone on the board will be able to help you with it.

alternatively you can use the graph I attached to solve this problem.

Bobak

5. Originally Posted by bobak
Well graphing interfaces vary form calculator to calculator. If you are unsure on how to use your calculator refer to its manual or post its make and model and maybe someone on the board will be able to help you with it.

alternatively you can use the graph I attached to solve this problem.

Bobak
Oh ok, thanks, that helps a lot. So is the answer 2095.4?

6. Originally Posted by OHHxDANGG
Oh ok, thanks, that helps a lot. So is the answer 2095.4?
Yes that is a good estimate.

Bobak