Answer:
Bob did the absolute wrong thing. Any item found on the ground, regardless of what it is, is not yours. In this example, Bob found money at a gas station. Chances are high that somebody dropped it by mistake after paying for gas. The right thing to do would have been to give the cash to the cashier.
The range of learning does Faustus choose to give his life to considering is Necromancy. It is the assumed routine of speaking with the dead, particularly keeping in mind the end goal to anticipate what's to come. Faustus pick magic over his previous reviews since he needs influence, notoriety, and cash.
