In what circumstances will a jury find that defendant had a predisposition to commit a drug crime?

In this case the jury plainly could have found defendant did not have an innocent mind, but rather a predisposition to commit this drug crime, as evidenced by his ready response to the inducement demonstrated by his ability to obtain the two kilograms of crack cocaine on credit from his supplier. See United States v. Valencia, 645 F.2d 1158, 1167 (2d Cir.1980) ("The fact that [defendant] was able to get a substantial amount of cocaine on credit ... would support an inference that [defendant] had dealt in cocaine on prior occasions.").