math
posted by Caitee on .
Cells ina certain plant can triple in number every 15 minutes.How many times greater is the number of plant cells after an hour and a half then the number of cells the plant had origanally?

It triples every 15 mins. So that's 3x's greator. There are 4, 15 min intervals in an hr so 3 x 3 x 3 x 3=81 times greator than when you started

an hour and a half has 6 periods of 15 minutes, not 4
so the multiplication factor is
3x3x3x3x3x3 = 3^6 = 729 
Thanks.Reiny you were correct.