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