Which decimal is greater 6.128 or 6.826

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

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

How are sas and sss used to show that two triangles are congruent?