7. an
800
400
0
(1, 1000)
2
(2,500)
(3, 250)
(4, 125)
4 n
In Exercises 8 and 10
![7 an 800 400 0 1 1000 2 2500 3 250 4 125 4 n In Exercises 8 and 10 class=](https://us-static.z-dn.net/files/db8/f68beea51599b8375961296198ae508f.png)