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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
avatar+1970 
+1

25/10 will be 2.5%

 Mar 25, 2020
 #2
avatar+115 
0

That answer is incorrect, I tried that. =/

Shaezy  Mar 25, 2020
edited by Shaezy  Mar 25, 2020
 #3
avatar+1970 
+1

Really? Sorry about that. I will try again.

CalTheGreat  Mar 25, 2020
 #9
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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
avatar+115 
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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
avatar+1970 
+1

25% each decade which is 1/4

 

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

 Mar 25, 2020
edited by CalTheGreat  Mar 25, 2020
 #5
avatar+115 
0

it isn't 1.25^1/10 either. 

Shaezy  Mar 25, 2020
 #6
avatar+1970 
+1

Hm.... 

 

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

 Mar 25, 2020
 #7
avatar+115 
0

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
avatar+1970 
+1

Are you sure?????

 Mar 25, 2020

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