Question 1205144
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{{{A[f]=A[0]e^(rt)}}}, or whatever letters your teacher/book uses.</pre>A bacteria culture is started with 100 bacteria.<pre>So A<sub>0</sub> = 100
{{{A[f]=100e^(rt)}}}</pre>After 7 hours, the population has grown to 600 bacteria.<pre>A<sub>f</sub> = 600 when t = 7

{{{600=100e^(r*(7))}}}

{{{6=e^(7r)}}}

{{{ln(6)=7r}}}

{{{ln(6)/7=r}}}

{{{0.2559656385=r}}}</pre>find the rate of growth in percent<pre>About 25.6%

Edwin</pre>