Please help me out here I would really appreciate it (will give brainiest)

Let r = 3. what is the value of r + 58?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done