Example 1 Express each relation as a table, a graph, and a mapping. Then determine the
domain and range.
1. {l-1, -1), (1, 1), (2, 1), (3, 2)}
2. {(0,4), (-4, - 4), (-2,3), (4,0)}
3. {(3,-2), (1, 0), (-2, 4), (3, 1)}

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

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?