The ordered pair (3,16) is a solution to which system of linear equations?

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

Need on this geometry question. explain how you did it.

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?