What is the greatest common factor of the terms of the polynomial below?

8x^4-12x^3+20x^2

a. 4x^3
b. 2x^3
c. 2x^2
d. 4x^2

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?