Step-by-step explanation:
I am going with A12x + 7yx = # of adult and y = # of childrenadults cost 12 and children cost 7 <
B doesn't make much senseu could say x was for girls and y for boys...but u already know how many there areso I am not sure what the x and y could stand for.
C does't make much sense eitherx would have to be red marbles and y would have to be green marbles...but just like B, u already know how many there areso not sure what x and y could stand for
D. wrongbecause the box containing x 7 oz packages and y 12 oz packages12x + 7yfor this one to be correct, it would have to have x 12 oz packages and y 7 oz packages