SOLUTION: In 28 years, a country's population doubled. Write this equation exponentially

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Question 61334: In 28 years, a country's population doubled. Write this equation exponentially
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
In 28 years, a country's population doubled. Write this equation exponentially
2P=Pe%5E%28k%2A28%29
2P%2FP=Pe%5E%2828k%29%2FP
2=e%5E%2828k%29
ln%282%29=ln%28e%5E%2828k%29%29
ln%282%29=28k%2Aln%28e%29
ln%282%29=28k%281%29
ln%282%29=28k
ln%282%29%2F28=28k%2F28
ln%282%29%2F28=k
:
P%28t%29=Pe%5E%28ln%282%29t%2F28%29
:
You can approximate k if your teacher would rather:
k=ln%282%29%2F28
k=.0247552564 Round it off to whatever your teacher wants:
P%28t%29=Pe%5E%28.0247552564t%29
Happy Calculating!!!