Names | Number of plastic bottles |
Isabella | 2 |
Riordan | c |
Andrew | 4 + 8 c |
The table shows the number of plastic bottles collected by 3 pupils.
- Find the total number of plastic bottles Isabella, Riordan and Andrew collected. Express the answer in terms of c in the simplest form.
- If c = 6, find the average number of plastic bottles the 3 pupils collected.