Answer:
3
Step-by-step explanation:
13-4=9
9/3=3
There may be more than one solution, but if we take the difference between the numbers of the sequence, we get
3-1, 11-3, 43-11
=2,8,32
which are powers of 2
=2^1, 2^3,2^5
If we believe the next difference is 2^7=128, then the next in the sequence will be 43+128=171
The answer is D. Group =2
9.4 cm --- 100%
3.5 cm --- x%
x = 3.5/9.4 * 100 ≈ 37.2%