The population of a colony of bacteria doubles every 19 hours. How long, in hours, does it take for the population to be approximately 2.0 times its original size? Answer correct to one decimal place.

Question

anonymous · Answer

look at the variable you have and make an equation "o" will be original size, and t will be time. 2o = o*2^(t/19). I think this is what you would use do you understand how I got this?

anonymous · Answer

so then whts after tht?

anonymous · Answer

Well just set o to an arbitrary value like 1, because it doesn't matter what the orinal amount is it will still take the same amount of time to double. Then you would solve for t. Do you know what I mean?

anonymous · Answer

so then would it be log 2/ log 2 = some number divided by 19 = t

anonymous · Answer

Okay remeber that logx^n is the same as nlogx does this help?

anonymous · Answer

yea so i am wright?

anonymous · Answer

oh wait lol yeah your right sorry i didn't realize you skipped a step

anonymous · Answer

you're**