the express provisions of the plea agreement, Mr. Diaz acknowledged his understanding that, in imposing his sentence, the district court would consider certain factors set forth in 18 U.S.C. § 3553(a) and the Sentencing Guidelines promulgated by the United States Sentencing Commission. Plea Agreement at 3-4. He further ac knowledged that the government “reserve[d] the right to advocate for, and present evidence relevant to, ... [sentencing] guideline adjustments and sentencing factors for consideration” by the probation office and the court. Id. at 4. Under the Sentencing Guidelines, a defendant’s relevant conduct, including his attempted drug sales, are pertinent sentencing factors. See U.S.S.G. §§ 1B1.3, 2D1.1; see also United States v. Moore, 130 F.3d 1414, 1419 (10th Cir.1997) (<HOLDING>). Mr. Diaz did not dispute at sentencing, and
holding that uncharged amounts of drugs may be included as relevant conduct even if the defendant never actually possessed or distributed the drugs holding firearms large sums of cash  and uncharged quantities of illegal drugs are admissible to show a defendant is involved in the distribution of illegal drugs holding that a defendant may be found to have taken a substantial step for the purpose of an attempt offense even though he or she has failed to gain possession of drugs or sham drugs holding that the quantity of drugs may not be used to support a departure holding that the presence of firearms may go toward proving that a defendant possessed drugs with the intent to distribute