Example:
12+24
GCF:
12: 1,2,3,4,6,12
24: 1,2,3,4,6,8,24
Common factors: 1,2,3,4,6
Greatest factor: 6
Divide:
12 divided 6= 2
24 divided 6= 4
12+24= 6x(2+4)
The number next to a variable, for example: 5x, is called a coefficient. And all you do is multiply the number with the variable
I believe the answer would be B. 11 because you can see a pattern. Its just skipping.
Answer:

Step-by-step explanation:
A parallelogram has opposite parallel sides and it is a quadrilateral.