pls pls pls, I beg you to answer this question only if you know the correct answer please please please I beg you

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?

In angle pqr find the measure of

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.