Names | Number of plastic bottles |
Risa | 7 |
Charlotte | w |
Zoe | 2 + 3 w |
The table shows the number of plastic bottles collected by 3 children.
- Find the total number of plastic bottles Risa, Charlotte and Zoe collected. Express the answer in terms of w in the simplest form.
- If w = 6, find the average number of plastic bottles the 3 children collected.