Betty needs3/4 of a yard of fabric to make a skirt. she buys 9 yards. how many skirts can she make?

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

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Need solving this 2nd limit problem.