Please help quick I will give brainliest :(

Will give brainliest what is the value of x? enter your answer in the box.

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?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)