The stem-and-leaf plot lists the ages of customers in a bookstore. How many customers are 19 or younger? Enter your answer in the box.

11 because it asks for people older than 45 so its not 12 so u just need to coubt how many numbers are after 45

The amount of different numbers from the row collom that says 10 and the collom that say one on the right tell you as easy as counting those numbersand you get the answers.