!please need help ASAP! 2) Find the slope between the two points (-5, 8) and (2, 22)

Write a corresponding real world problem to represent 2x - 125=400

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

Don't know how to find x given these segment lengths