Hire a lawyer and try to negotiate it through your lawyer with the prosecutor.
You will get no where trying to do so on your own. And, if you try to defend yourself at trial alone that will go over like a lead balloon.
In Illinois, speeding 31-39 mph over the limit is now a Class B Misdemeanor, punishable by up to $1,500 in fines and 6 months in jail.
It is a class B misdemeanor and you are not eligible for supervision, unless the speed is reduced. This charge is punishable anywhere from a conviction and fine up to 6 months in jail and/or a $1,500 fine.