Calculate grade needed on a final based on current grade

Hello, I am wondering, because my grade in Math right now is so high and above what you need for an A in my class, that if I could completely bomb the final and still have an A.

Right now, I have a 95.00% exactly. I need to have greater than or equal to an 86.00% in the class to have an A.

If I have:

37.1 / 40.0 points in Tests category which is worth 50% of my grade,

19.1 / 20.0 points in Quiz category which is worth 30% of my grade,

45.0 / 45.0 points in Homework category which is worth 20% of my grade,

And the final will go under the tests category as two independent grades each being worth 5 points. Example: If I get a 4.2 on the final (out of 5) then it will go in as 4.2 two times. Just mainly for emphasis just because it's a final exam.

Therefore, what do I need to get on this final to keep my A, if nothing else is added to the gradebook?

Thanks!