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Mathematics 18 Online
OpenStudy (anonymous):

a countrys population in 1990 was 134 million in 2000 it was 139 million estimate the population in 2014

OpenStudy (dangerousjesse):

|dw:1408290025989:dw|

OpenStudy (dangerousjesse):

As you can see, the population is raised by 5 million people every ten years.

OpenStudy (dangerousjesse):

2014 is between 2010 and 2020, so you need to multiply 5,000,000 by .10

OpenStudy (dangerousjesse):

And then solve (5,000,000*.10)4=x

OpenStudy (anonymous):

ok thank you so much

OpenStudy (dangerousjesse):

No problem.

OpenStudy (anonymous):

I got 20000000.4?

OpenStudy (dangerousjesse):

What's 5,000,000 time .10?

OpenStudy (dangerousjesse):

times*

OpenStudy (anonymous):

50,000,000

OpenStudy (anonymous):

500,000

OpenStudy (dangerousjesse):

No. The sum will be less than 1,000,000.

OpenStudy (dangerousjesse):

Yes^

OpenStudy (dangerousjesse):

Now multiply 500,000 by 4.

OpenStudy (anonymous):

2000000

OpenStudy (dangerousjesse):

Yes, good job. Now add 144,000,000 and 2,000,000 together to get the population in 2014.

OpenStudy (anonymous):

146000000

OpenStudy (dangerousjesse):

Mhm, and that's your answer :)

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