Hey there!
6 + 34 = 40
so x = 6
Hope this helps
Have a great day (:
127.23cm should be the surface area!
The mean is the sum of the given data divided by the number of the data
So we will add the data first
The sum of the times = 10 + 5 + 6 + 8 + 13 + 9 + 11 = 62
The number of students = 7
The mean is

Round it to the nearest tenth, then
The mean = 8.9
The mean travel time is 8.9