Answer:
The region where the inequality is valid is (x>-5) and (x<-9).
The graph is attached.
Explanation:
We have a inequality and we have to determine the region in the xy-plane that inequality.
We divide the inequality in two regions:
1) When (x+7)>0, we have:
2) When (x+7)<0, we have:
Then, the region where the inequality is valid is (x>-5) and (x<-9).
The graph is attached.