What type of sentencing model would you use to sentence the offenders?

(https://learn-us-east-1-prod-fleet01-xythos.s3.us-east-1.amazonaws.com/5c1754ad402d4/309358?response-content-disposition=inline%3B%20filename%2A%3DUTF-8%27%27Schmalleger%25207e_Ch03_PPT.pdf&response-content-type=application%2Fpdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20190916T174529Z&X-Amz-SignedHeaders=host&X-Amz-Expires=21599&X-Amz-Credential=AKIAIBGJ7RCS23L3LEJQ%2F20190916%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=2506865fd27005cba6ea27643df93b59bc41d601b46fa93181faf92361d2eaee)What type of sentencing model would you use to sentence the offenders?
What actual sentence would you impose (type and time)?
What are the goals of sentencing that are associated with your decision?

Scenario #1
Sam Smith is 19 years old. He was convicted of an armed robbery of Wachovia Bank on 125th Street in North Miami. During his robbery he possessed and displayed a firearm but did not fire the gun. He took $100,000.00 from the bank. No one was injured as a result of the robbery. He has accepted responsibility for his actions. He has no previous criminal history.

Scenario #2
Jennifer Lopez is 45 years old. She was convicted of sexual exploitation of a minor. She basically prostituted her 11 year old niece of whom she was the legal guardian. Maria made her niece have sexual relations with hundreds of men in the Homestead area. Maria has not accepted responsibility and she does not believe that she did anything wrong. Maria does not have a criminal history.