What do I have to get on my final to keep and A?

n my English cl I got a 98 on the first paper (20% of grade) a 98 on the second paper (25% of grade) a 103 on the third paper (25% of grade) a 91 on the midterm (15% of grade) and a 95 on the oral presentation (5% of grade) how low can I score on the final (10% of grade) and still keep an A in English?