Answer
$4,9,14,19,24,29,34,39,44,49$
Work Step by Step
The upper class limit for each class is found by looking at the numbers under the heading “Number of Social Interactions” and choosing the biggest number in each row. Thus the upper class limits for each class in order of the table from top to bottom are: $4,9,14,19,24,29,34,39,44,49$