5u = 56 -3u i dont get how this works ;-; :p

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test