Last question of today (hopefully)

Your local bank offers free checking for accounts with a balance of at least $500.suppose you have a balance of $516.46 and you write a check for $31.96 how much money do you need to deposit to avoid being charged a service fee. You must include in your answer the inequality and the amount you must add if you don’t add those two things your work will result in a 0 so please show all work have a good night everyone.