Logan is studying the reproductive rate of fruit flies and uses the table below to record the fruit fly population every week for 7 weeks. Which of the following functions would best fit his data?

Week (W) 1 2 3 4 5 6 7
Number of fruit flies (N) 5 10 20 40 80 160 320

A. N = 2+(5)^w
B. N = 2(5)^w-1
C. N = 5(2)^w-1
D. N= 5(2)^w

Question

Logan is studying the reproductive rate of fruit flies and uses the table below to record the fruit fly population every week for 7 weeks. Which of the following functions would best fit his data?

Week (W)	1	2	3	4	5  6  7
Number of fruit flies (N)	5 10 	  20  40	80 160 320

 		A.	N = 2+(5)^w
 		B.	N = 2(5)^w-1
 		C.	N = 5(2)^w-1
 		D.	N= 5(2)^w

retireed · Answer

Week (W)                        1  2  3    4  5    6     7 
Number of fruit flies (N) 5 10 20 40 80 160 320   

 Fruit flies DOUBLES every week AFTER the first week.  

If can can't figure it out graph EACH equation to see which equation fits the data.  Hopefully. you have some type of graphing calculator or can find an on-line graphing site.