@nyugirl17 -Send a letter to the admission office right now explaining your mother’s situation, the stress it’s put on you, plus cite any extra hours you have put in taking care of her or spending time with her. If you end up with a D+ in math … along with the rest of the downturn in other grades … the admission folks will not be pleased, but your explanatory letter will put the drop of grades in perspective, and I think you should be okay. Don’t hesitate. Write today! And best wishes for a full recovery for your mom.