6. A culture of bacteria in a biology lab contains 2000 bacteria cells. The number of cells in the
culture doubles every day. This can be
expressed by the equation N= 2000 x 21,
where N represents the number of bacteria
cells and t represents the time, in days.
a) Find the number of cells in the culture after
2 days and after 1 week.
b) How many cells were in the culture 2 days
ago? Hint: 2 days ago means t= -2.
c) What does t = 0 indicate?