May you please look at the detail i added that is the question?

Question

the cells of some kinds of bacteria divide every 30 minutes.If you begin with a single cell,how many cells will there be after 1 hour?2 hour? 3 hour? everybody this is the question because the other one didnt fit

Answer 1

just use geometric progresiion....
suppose 1 cell..after half hr.......2
now 2 cells.........after half hr more........4
4 celss to 8 and so on.......
start from where u r given the total cells

Answer 2

You can do this yourself. Just equate each 30 minute period to a power of 2, so 1 hour=2 periods= 2^2 cells, 3 hours=6 periods=2^6 cells and so on.

Answer 3

1 hour, 4 = 2^2

2 hours, 16 2^4

3 hours 64 2^6

multiply the hour by 2 and put that as the exponent over 2

Answer 4

After 30 mins, there are 2 cells.
1 hr: 4 cells
1.5 hr: 8
2 hr: 16
2.5 hr: 32
3 hr: 64

Answer 5

starting with ONE cell, in 30 minutes you have two so each divides in 30 mins,

in ONE HOUR you have FOUR; then in 90 mins you have 8 and in

TWO HOURS you have 16; in 2.5 hours you have 32, so in
THREE HOURS you have 64

just remember it doubles every half hour.

Answer 6

at 30 min- two
at 1 hr-4
at 1.5 hrs-8
at 2 hrs-16
at 2.5 hrs-32
at 3 hrs-64

Answer 7

After 1hr - 4
After 2hr - 16
after 3hr - 64