ANSWER
[tex]37.5\text{ }\leq\text{ 50}[/tex]EXPLANATION
The maximum weight airline passengers can put before being charged additionally is 50 pounds.
Jill has 37.5 pounds in her suitcase.
Therefore, the inequality to represent the situation is:
[tex]37.5\text{ }\leq\text{ 50 }[/tex]