Respuesta :
This is what I found, I haven't done this math in a while so this is as much help as I can be. I hope this helps.
![Ver imagen Groe](https://us-static.z-dn.net/files/d06/787026b7be93b6ae38bc5a368278299e.png)
Answer:
D, an = an-1-8;a1=38
Step-by-step explanation:
pretty sure its right, if it isnt ill comment below