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Algebra 24 Online
OpenStudy (teller):

Can someone please help me on this ? A city has a population of 350,000 people. Suppose that each year the population grows by 5.5%. What will the population be after 10 years?Use the calculator provided and round your answer to the nearest whole number.

OpenStudy (teller):

How do I round it off ? would it just be 350?

OpenStudy (teller):

I'm confused..

OpenStudy (anonymous):

1.1 divided by 2 = ?

OpenStudy (teller):

0.55

OpenStudy (teller):

192500?

OpenStudy (teller):

times it by 10?

OpenStudy (teller):

542500?

OpenStudy (teller):

so it would be 543?

OpenStudy (teller):

so just 542500?

OpenStudy (campbell_st):

use \[Population = 350000\times(1 + 0.055)^{10}\]

OpenStudy (teller):

it said it was wrong..

OpenStudy (campbell_st):

this is an application of exponential growth... and uses the compound interest formula as shown above

OpenStudy (anonymous):

@campbell_st will help

OpenStudy (campbell_st):

I've already posted a solution

OpenStudy (teller):

597850.56042376?

OpenStudy (teller):

That's what I got.

OpenStudy (campbell_st):

well just round it to the nearest whole number

OpenStudy (teller):

How?

OpenStudy (campbell_st):

what would you round 0.5 to 0 or 1

OpenStudy (teller):

1?

OpenStudy (campbell_st):

great so the answer ends in 1

OpenStudy (campbell_st):

so 597851

OpenStudy (teller):

Thank you

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