SOLUTION: 7^(n+3)=80

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Question 954603: 7^(n+3)=80
Found 2 solutions by Alan3354, Edwin McCravy:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
7^(n+3)=80
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If you want to solve for n (you should say that):
(n+3)*log(7) = log(80)
n+3 = log(80)/log(7)
n = -3 + log(80)/log(7)
Answer by Edwin McCravy(20065)   (Show Source): You can put this solution on YOUR website!


Take logs of both sides





Divide both sides by log(7):



Subtract 3 from both sides:



Get a calculator:



Note: you can use "ln" (natural logarithm) instead of 
"log" (common logarithm) and get the same answer.

Edwin
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