Rivka is given the following scenario. After stating the given information, how might Rivka continue her proof?

7x+8y=-18, 4x-9y=-3 solve the system of equations

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

What is 1/3x5 on anuber line what does it look like on a number line