Answer:
-3 + h ≤ 3.4
Explanation:
Let the unknown number be h. If A number h added to −3, this is expressed as;
-3 + h
Since the result is at most 3.4, it means that it cannot be greater than 3.4, hence the best inequality sign to use is a less than or equal to sign ≤. The required expression will be;
-3 + h ≤ 3.4