SOLUTION: The present concentration of carbon dioxide in the atmosphere is 354 parts per million and is increasing at a continuous rate of 4%. How many years will it take for concentration t

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Question 445742: The present concentration of carbon dioxide in the atmosphere is 354 parts per million and is increasing at a continuous rate of 4%. How many years will it take for concentration to reach 500 parts per million

i know the continuos interest equation is APe^(rt)
e. 2.718
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
500 = 354 e^(.04t)

500/354 = e^(.04t)

ln(500/354) = .04t

[ln(500/354)] / .04 = t