PLEASE HELP WILL AWARD BRAINLIEST IF GOOD EXPLANATION THANK YOU x varies directly with y and inversely with . If x = 3 and y = 12 when z = 2, find y when x = 1 and z = 4.

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?