Names | Number of tin cans |
Evelyn | 5 |
Christian | b |
Natalie | 7 + 5 b |
The table shows the number of tin cans collected by 3 students.
- Find the total number of tin cans Evelyn, Christian and Natalie collected. Express the answer in terms of b in the simplest form.
- If b = 9, find the average number of tin cans the 3 students collected.