The total amount Ellen paid for the book $16.21
Hope this helps!!
The answer would be
F(x)=x^2-8x
Answer:

Step-by-step explanation:





I used the following rules:


Answer:
5n+8
Step-by-step explanation:
We are swamped with questions today so i will not be able to provide you with work. But I'm a college professor. Trust my answer.
Glad I was able to help!!