Answer:
The correct answer is $12
Step-by-step explanation:
To check, subtract 12 from 31
31 - 12 =19
Multiply 19 by 2
19 x 2 =38
Add 12
38 + 12 =50
37+n=p because all your doing is putting the numbers into a problem with the correct signs.
Answer: Square, 24 square inches
Step-by-step explanation:
Given
Diameter of round pizza 
Side of square pizza 
Area of circle 
The area of a square is 

The area of square pizza is

Clearly, the area of square pizza is more and the difference in their area is

"the following" of what? I think you are missing the list
Answer:
It’s the first one