SOLUTION: A culture started with 6,000 bacteria. After 3 hours, it grew to 7,200 bacteria. Predict how many bacteria will be present after 19 hours. Round your answer to the nearest whole nu

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Question 1088927: A culture started with 6,000 bacteria. After 3 hours, it grew to 7,200 bacteria. Predict how many bacteria will be present after 19 hours. Round your answer to the nearest whole number.
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
y=6000%2Ae%5E%28kx%29
x=3,y=7200;
6000%2Ae%5E%283k%29=7200
e%5E%283k%29=1.2
ln%28e%5E%283k%29%29=ln%281.2%29
3k=ln%281.2%29
k=ln%281.2%29%2F3
k=0.06077

x=19,k=0.06077,y=what?
y=6000%2Ae%5E%280.06077%2A19%29