Which best describes the function on the graph? direct variation; k = −2 direct variation; k = inverse variation; k = −2 inverse variation; k =

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?