Jhon and 2 friends are going out for pizza for lunch they split one pizza and 3 large drinks the pizza cost $14 after using the $7 gift certificate they spend a total of $12.10 write an equation to model this situation and find the cost of one large drink

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?