Which of the expressions below are equal to 5x + 20y? Select all that apply. A) 5(x + 4y)
B) 3x + 12y + 2x + 8y
C) 3x + 10y + 3x + 8y
D) 2x + 15y + 2x + 5y

Help plzzz

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?