Reorder the following equations in ascending order of steepness. y = 15x + 5 y = 0.15x - 1 y = x y = x + 100

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?