Which ordered pair could be the missing values represented by (x, y)? (0, 18)
(5, 19.5)
(8, 20)
(10, 21.5)

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?