Given that f (x) = 2/x^2 , What is the value of f(x) when x = 2?

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?

How do you find the circumfrance of a circle?

What is r i 4.5+10r=-6.5 with work pls