Posted by jh on .
NEED HELP ASAP PLEASE!!
A bacteria culture starts with 2000 bacteria and the population doubles every 3 hours.
a) A function that models the number of bacteria after t hours is p(t)=____________?
b) The number of bacteria present after 5 hours will be about _____ ?
c) The population will reach 22000 after approximately ________ hours.

Precalculus 
Reiny,
very similar to your
http://www.jiskha.com/display.cgi?id=1267744260
except we have
p(t) = 2000(2)^t, where t is the number of 3hour periods.