of 50,000 bacteria, the number of bacteria decreases exponentially. after 9 hr, there are only 20,000 bacteria.
a.) write an exponential function to express the growth function, y, in terms of of time, t, in hours.
b.) in how many hours will half the number of bacteria remain?
a.) write an exponential function to express the growth function, y, in terms of of time, t, in hours.
b.) in how many hours will half the number of bacteria remain?