Final answer:
Anthony's score after missing a Daily Double question which led to a loss of $400 from his initial score of $-2300, resulted in a new score of $-2700.
Step-by-step explanation:
When playing Jeopardy, if Anthony had a score of $-2300 and chose a Daily Double question worth $400 but got it wrong, he lost that amount, thereby decreasing his score by $400. To find his new score, you subtract $400 from his previous score:
Anthony's new score = original score - loss from Daily Double question
Anthony's new score = (-$2300) - $400 = -$2700
So, after missing the Daily Double question, Anthony's score was $-2700.