Names | Number of plastic bottles |
Nora | 4 |
Lily | b |
Dylan | 2 + 7 b |
The table shows the number of plastic bottles collected by 3 students.
- Find the total number of plastic bottles Nora, Lily and Dylan collected. Express the answer in terms of b in the simplest form.
- If b = 3, find the average number of plastic bottles the 3 students collected.