Names | Number of glass bottles |
Hannah | 5 |
Audrey | d |
Ellie | 7 + 5 d |
The table shows the number of glass bottles collected by 3 students.
- Find the total number of glass bottles Hannah, Audrey and Ellie collected. Express the answer in terms of d in the simplest form.
- If d = 3, find the average number of glass bottles the 3 students collected.