Final answer:
The pattern in the data shows that as A doubles, B increases by 10. To find the missing value of A for B=60, we determine that A should be 16 when B is 60 as it fits the observed doubling pattern.
Step-by-step explanation:
Looking at the given data chart, there is a clear increase in value B as value A increases. To determine the missing value of A where B is 60, we need to recognize the pattern between A and B. The pattern suggests that as A doubles, B increases by 10. Let's observe the pattern:
- A = 2, B = 30
- A = 4, B = 40
- A = 8, B = 50
- A = ?, B = 60
- A = 32, B = 70
- A = 64, B = 80
If we continue this pattern, doubling A from 8 to 16 should correspond to B increasing by 10 from 50 to 60. Therefore, the missing value of A is 16 when B is 60.