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# Functions and Modeling

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A certain population grows by 25% per decade. What is its percentage growth each year? (Round your answer to two decimal places.)

Mar 25, 2020

#1
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25/10 will be 2.5%

Mar 25, 2020
#2
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That answer is incorrect, I tried that. =/

Shaezy  Mar 25, 2020
edited by Shaezy  Mar 25, 2020
#3
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Really? Sorry about that. I will try again.

CalTheGreat  Mar 25, 2020
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THIS IS THE CORRECT ANSWER:

1.25^(1 / 10) =1.02256518 - 1 x 100 =2.26% - percentage growth per year.

Guest Mar 25, 2020
#10
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Thanks so much! Also how did you know to multiply by 100? I see that you suibtracted 1. Is that the decay formula a=1-r?

Shaezy  Mar 25, 2020
#4
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25% each decade which is 1/4

Is it (1.25)^1/10???

Mar 25, 2020
edited by CalTheGreat  Mar 25, 2020
#5
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it isn't 1.25^1/10 either.

Shaezy  Mar 25, 2020
#6
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Hm....

I think it is 1/4 divided by 10 which is 0.025, which rounds to 0.03.

Mar 25, 2020
#7
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Actually i dont think that would be correct. Now that I am looking at how you answered.

Shaezy  Mar 25, 2020
edited by Shaezy  Mar 25, 2020
#8
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Are you sure?????

Mar 25, 2020