Question

11. Solve the inequality. Show your work.
|r + 3| ≥ 7

Answer 1

r+3≥7
r≥4

-(r+3)≥7
-r-3≥7
-r≥10
r≤-10

That was my answer but my teacher said "Make sure the final solution statement is written as a compound inequality with the proper conjunction AND or OR joining the two inequalities" I don't know what this means?