help asap!!

Empire Aidlines reports the following cost data for the year. The company flew 100 private flights during the year. A group has offered Empire $11,000 for a private flight to Chicago for its members. (a) What is the contribution margin from accepting the offer? (Negative amounts should be indicated with a minus sign.) (b) Should the offer be accepted or rejected? Complete this question by entering your answers in the tabs below. What is the contribution margin from accepting the offer? (Negative amounts should be indicated with a minus sign.)