How many cells will there be after seven days?

After 1 day, there is only 1 cell.
After 2 days, there are 5 cells.
After 3 days, there are 10 cells.
After 4 days, there are 16 cells.

Question

How many cells will there be after seven days?

After 1 day, there is only 1 cell. 
After 2 days, there are 5 cells. 
After 3 days, there are 10 cells. 
After 4 days, there are 16 cells.

amistre64 · Answer

depends onh the rule that you either forgot to post, or was posted in a previous problem that is not included in this posting .....

hartnn · Answer

look for pattern,after first day how many cells increased?is the increase same after 2nd and 3rd day also,and next days too,then u got the pattern..... continuing with this pattern u can find no. of cells after 7 days...

amistre64 · Answer

or, is that the recurssion in days .... so hard to read on a saturday

hartnn · Answer

like here at 2nd day 4 cells increased,3rd day 5 cells increased,4th day 6 cells increased.....see the pattern?

anonymous · Answer

okay i got 40? is that correct?

anonymous · Answer

i see it now

anonymous · Answer

hartnn already explained it to her so i thought i would tell her im sorry

amistre64 · Answer

does "after 7 days" imply on the eighth day and beyond?

amistre64 · Answer

Rkb, explaining is how we get them to participate; if another person comes along and swoops in with the answers without letting the asker participate ... its called "snipeing the question" .. i didnt name it

anonymous · Answer

alright im kinda new to this im sorry

amistre64 · Answer

if you havent read this already http://openstudy.com/code-of-conduct this gives people a rundown of the basic intent of this site.