A graph shows the relationship between the number of hours you rent a bike and the total cost of renting the bike. One of the points on the graph is (2,22) . Which number represents the independent quantity?

[ ? ]

The independent quantity, or the input value, is typically represented by the x-coordinate in a graph. In this case, the number of hours you rent a bike (hours) is the independent quantity, so it would be represented by the number 2 in the point (2,22).