Therefore, the total score of the robot cat after passing the first nine levels is less than 9.87, and the highest score can only be: 87×9- 1=782 (points).
If the robot cat wants to get an average score of more than 88 points after 10, then the total score of 10 should be at least: 88×10+1= 881(points).
Therefore, if he passes the 10 level, he must at least call 88 1-782=99 (points).