Question 1205447
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{{{A=pe^(rt)}}}<br>
From the given information about the numbers of bacteria at 12pm and 3pm....<br>
{{{13000=10000e^(3r)}}}
{{{e^(3r)=1.3}}}<br>
Using that to find the number of bacteria at 7pm....<br>
{{{x=10000e^(7r)}}}
{{{x=10000(e^(3r))^(7/3)}}}
{{{x=10000(1.3)^(7/3)}}}
x = 18444.54 to 2 decimal places; round to the nearest whole number.<br>
ANSWER: 18,445 bacteria at 7pm<br>