Question

the number of cells in a tumor doubles every 6 weeks starting with 8 cells. after how many weeks does the tumor have 1500 cells?

Answer 1

this is a geometric series with common ratio 2
sum = 1500 = 8 2^n - 1 / 2-1
1501 = 8* 2^n - 8
2^n = 1501 / 8 =
n log 2 = log 187.6
n = 7.55

number weeks = 7.55 * 6 = 45.3 weeks

Answer 2

3rd line should be 1501 = 8* 2^n

Answer 3

sum of a G S = a x r^n - 1
-------
r - 1

where a = first term and r = common ratio

Answer 4

r u ok with this jessica? any questions?

Answer 5

Yes, thank you so much!

Answer 6

yw

Answer 7

plz click good answer to close question