Combine the like terms to create an equivalent expression: 8n + 12 + (-9) - (-6n)

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?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.