please help, due today!!

Answer:
4h+7[tex]\leq[/tex]20,
Step-by-step explanation:
Because it says that he has to pay $4 for an hour and we don't know how many hours he will be there so it will 4h, and he just has to pay $7 and we know that he has $20 so he can't have a price that will be higher or equal to 20!
Hope this helps!