The stem-and-leaf plot shows the ages of customers who were interviewed in a
survey by a store.
how many customers were older than 45?
ages of store customers

1| 0 2 3 3 6 8
2| 1 1 3 4 5 6 6 8 9
3| 2 2 4 4 4 5 7
4|1 2 3 3 5 8
5| 0 0 1 5 6
6| 2 4 5 5
7| 3
key: 1| 0 = 10