Complex sentence: The offender's age and seriousness of offense (ex. use of a weapon) both influence public opinion, in that the older an offender is and the more serious his crime, the more likely the public is willing to transfer him.
Split into simpler sentences: The offender's age and level of offense (ex. use of a weapon) both influence public opinion. The older an offender is and the more serious his crime, the more likely the public is willing to transfer him.