Don't give me the answer just explain where I messed up.

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?

What is the absolute value of the complex number -4-sqrt2i

Item 1 solve for s. s+24=90 −114 −66 66 114