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Mathematics 16 Online
OpenStudy (anonymous):

A city of 100,000 people is growing at a rate of 5.2% per year. Assuming this growth rate remains constant, estimate the population of the city 5 years from now.

OpenStudy (johnweldon1993):

population = population initially (1+r)^t you have inital...you have rate...and you have the time...so your answer is?

OpenStudy (anonymous):

=100000(1+5.2)^5 do you change the rate to .052? I was working on one yesterday and it made me do that.

OpenStudy (johnweldon1993):

correct :)

OpenStudy (johnweldon1993):

always turn that percent into a decimal

OpenStudy (anonymous):

so rounded it would be 128, 848.

OpenStudy (johnweldon1993):

correct....and it makes sense too doesnt it rises by 5.2 percent every year...about 5% of 100000 is 5000 right? so imagine 5000 times 5 years...it'll be around 25000 added so it makes sense :)

OpenStudy (anonymous):

haha thanks for waiting for me to answer there ;) but yeah it does, i was looking at the wrong page of equations.

OpenStudy (johnweldon1993):

anytime of course :)

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