Question 913470
I'm assuming the equation should be {{{n(t) = 1000e^(0.4t)}}}


Plug in t = 4 and evaluate


{{{n(t) = 1000e^(0.4t)}}}


{{{n(4) = 1000e^(0.4*4)}}}


{{{n(4) = 1000e^(1.6)}}}


{{{n(4) = 1000(4.9530324)}}} This is approximate


{{{n(4) = 4953.0324}}} This is approximate


So the approximate number of bacteria after 4 hours is roughly 4,953.0324


Round to the nearest whole number to get 4,953


Final Answer: <font color="red">4,953</font> bacteria (approximate figure)


Let me know if you need more help or if you need me to explain a step in more detail.
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Thanks,


Jim