Answer:
You need to deposit a minimum of $15.50 to avoid being charged a service fee.

Step-by-step explanation:
Let x represent the amount needed to be deposited to avoid being charged a service fee.
Given;
Initial balance = 516.46 dollars
Amount on cheque to be withdrawn = 31.96 dollars
Minimum amount to avoid being charged = 500 dollars
So we have;

Therefore, you need to deposit a minimum of $15.50 to avoid being charged a service fee.
