Answer:
56.3%
Step-by-step explanation:
The number that was added to the previous number is doubled.
For example:
2+1 = 3
2x1= 2
3+2= 5
2x2=4
5+4=9
4x2=8
8+9=17
I hope this helps:)
your answer is 5 I think
put i=1,2,...,n
20,24,28,36,51,60 us the correct statement