I need help please

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?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?

Identify the parent function that can be used to graph the function f(x)=3(x-9)2