Question 74131
The number of germs in a dish after t minutes is given as B=25e^(kt).  If there are 2191 germs present after 6 minutes, find k (round out to 4 places). 
B=2191
t=6
{{{2191=25e^(k*6)}}}
{{{2191/25=25e^(6k)/25}}}
{{{2191/25=e^(6k)}}}
{{{ln(2191/25)=ln(e^(6k))}}}
{{{ln(2191/25)=6kln(e)}}}  ln(e)=1
{{{ln(2191/25)=6k}}}
{{{ln(2191/25)/6=6k/6}}}
{{{.74554=k}}}
{{{highlight(k=.7455)}}}
Happy Calculating!!!!