An ecosystem is a collection of living and non-living things that work together. True or False.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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

Witch represents the inverse of the function f(x)=1/4x-12