Far too many sentencing variables exist. High speed over limit. Aggravating factors. Age of offender. Prosecutor discretion.
Have your friend follow this observation -->>
Check with your lawyer and then even he or she can only suggest to you possible ranges of sentences. If you do not have a lawyer and cannot afford one a lawyer will be appointed to you.
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Most likely he was cited under ARS 28-701.02, which is excessive speed. It's not a felony, but is a class 3 misdemeanor punishable by up to 30 days in jail and a fine. I've handled quite a few of these and have never had a client get jail time, but obviously each case is different.