Lauren bought two types of shirts on sale. she bought x shirts that cost 3 each and y shirts that cost 12 each. there are 44 total jackets and they have a total cost of $300

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?