Step-by-step explanation:
3.) a.) The variables are the number of adults and the number of children.
b.) The systems of equations are (x + y = 1255) and (10x + 7y = 12, 295).
c.) There were 1,170 adults and 85 children who went to see the movie.
4.) a.) The variables were the number of chocolate chip cookie dough packages and the number of oatmeal cookie dough packages sold.
b.) The systems of equations are (12x + 3y = 225) and (6x + 11y = 293).
c.) The chocolate chip cookie dough package costs $14.00 and the oatmeal cookie dough costs $19.00.
