Hello, this is my last attempt to get it right so if you can please help me​

Convert 2000 swiss francs to dutch guilders

Solve for the equation. 4x - 13 = 2x + 9

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?