Answer:
5
Step-by-step explanation:
According to the described rule, we have

We can see the pattern

In other words, for all 

Now,

Answer:
38%
Step-by-step explanation:
The additional wage compared 12 years of education to 16 years of education is:

Answer:
Surface area of sphere = 4πr²
r = radius
radius = diameter /2
= 12/2
= 6units
Surface area = 4π×6²
= 144π
= 452.4 square units
Hope this helps.
You can look up cymath.com it will work the problem out for you and show you the steps.
Put this into a scientific calculator
1/3 x pi x 18 squared x 16