F(x)=(2-a)x+3 ,determinati aapartine lui r stiind ca a(1,5) este situat pe graficul functiei ,si punctil b) pentru ''a'' determinat reprezentati grafic functia . va rog sa ma ajutati pl

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?