Translate five units left and four units down (geometry)

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

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

Find the cosine function that is represented in the graph.