what is the answer for the b column

Answer:
3 ➡ 12
5 ➡ 16
7 ➡ 20
9 ➡ 24
Step-by-step explanation:
Replace c, in b = 2c + 6, with each number in the c column to find that number's b counterpart.
For example: For the first one, you'd replace c with 3, so it would look like
b = 2(3) + 6, now just multiply 2 and 3 to get 6, and then add the other 6 to get 12. Keep doing this for the rest of the numbers.
I hope this helps ya out friend :)