Appellant Kevin Hill was convicted of three counts of distribution of cocaine base in violation of 21 U.S.C. § 841(a)(1). On appeal, the appellant claims that the district court 2 improperly denied his motion in limine that sought to exclude evidence of his prior drug distribution under Fed. R.Evid. 404(b), that it improperly determined his relevant offense conduct before imposing a 188 month sentence, and that it erred in not granting a variance from the advisory guideline sentencing range of 188 to 235 months. We affirm the appellant’s conviction and sentence.
I. BACKGROUND
The appellant was charged with three counts of distribution of cocaine base (crack cocaine). The indictment alleged that the appellant had distributed a total of 7.8 grams of crack cocaine to a confidential informant on three separate occasions. 3 However, he later confessed to distributing an additional 198 ounces of cocaine, and the use of his confession is the primary subject of this appeal.
At trial, the government offered the confession pursuant to Rule 404(b) for the purpose of proving the appellant’s knowledge of cocaine or intent to distribute it. FBI Agent Larry Bruns testified that, at a post-arrest interview, the appellant admitted to distributing 198 ounces (5,613 grams) of cocaine 4 between October of 2007 and September of 2008. The court denied the appellant’s motion in limine to exclude Agent Bruns’ testimony. The court gave a limiting instruction at the time the evidence was presented and again at the end of the trial. 5 The jury returned a verdict of guilty on all three counts.
The United States Probation Office prepared a Presentence Report (“PSR”). In addition to the 7.8 grams of crack cocaine for the charged offenses, the PSR included the distribution of the 198 ounces of cocaine as relevant conduct when determining the appellant’s base offense level under the Sentencing Guidelines. This resulted in a base offense level of 32. With the appellant’s criminal history category V 6 , the Guidelines suggested a range of imprisonment between 188 and 235 months.
The district court found the appellant responsible for both the 7.8 grams of crack cocaine and the 198 ounces of cocaine. The appellant then objected to his criminal history category and requested a downward variance on the basis that it was overstated. The district court found that the appellant’s criminal history was not overstated and sentenced the appellant to the bottom of the guidelines range on each *592 count, 188 months’ imprisonment, with all three counts to run concurrently. The court also imposed a $300 special assessment and a three year term of supervised release.
II. DISCUSSION
A.
The appellant first contends that the district court erred in admitting the testimony of Agent Burns pursuant to Rule 404(b). We review the admission of Rule 404(b) evidence for an abuse of discretion. Uni
ted States v. Washington,
The appellant argues that the admission of his alleged prior drug dealing was more prejudicial than probative because it was not sufficiently connected to the charged offenses. The appellant also asserts that the Rule 404(b) evidence was unnecessarily confusing to the jurors because it pertained to sales of cocaine made to different individuals and there was no corroboration of Agent Bruns’ testimony.
The government argues that the Rule 404(b) evidence was properly admitted. It contends that the evidence was probative on the issues of knowledge and intent, the evidence was close in time and similar in kind to the crimes charged, and that any prejudicial impact was mitigated by the court’s limiting instruction given to the jury on two occasions.
The district court did not abuse its discretion in agreeing with the government. The appellant put his knowledge and intent at issue by pleading not guilty and requiring the government to prove his guilt beyond a reasonable doubt.
United States v. Walker,
B.
The appellant next contends that the district court erred in calculating the appellant’s base offense level under the Sentencing Guidelines by including as relevant conduct the 198 ounces of cocaine from the appellant’s confession. The government must prove drug quantity by the preponderance of the evidence.
United States v. Minnis,
At sentencing, Agent Bruns testified that the appellant admitted to possessing and distributing approximately nine ounces of cocaine every two weeks for eleven months. Agent Bruns testified that the appellant was conservatively responsible for distributing 198 ounces of cocaine. The Sentencing Guidelines permit district courts to approximate drug quantities where “ ‘there has been no direct seizure of drugs ... to establish^ ] the relevant amount,’ ”
United States v. Zimmer,
After reviewing the record, we are not left with the firm conviction that a mistake has been made.
See Johnson,
C.
Finally, the appellant contends that the district court erred in not granting a downward variance from the guideline range. He asserts that the ratio of crack cocaine to powder cocaine creates an unwarranted sentencing disparity within the meaning of 18 U.S.C. § 3553(a)(6).
We apply a deferential abuse of discretion standard in reviewing the imposition of a sentence.
United States v. Replogle,
Here, the district court properly considered all the arguments, including the crack to powder cocaine ratio argument,
*594
and the 18 U.S.C. § 3553(a) factors and sentenced the appellant to the bottom of the advisory range. A sentence within the guidelines range is presumptively reasonable.
See United States v. Vinton,
III. CONCLUSION
The judgment of the district court is affirmed.
Notes
. The Honorable Rodney W. Sippel, United States District Judge for the Eastern District of Missouri.
. The indictment charged the appellant with distributing a mixture or substance containing cocaine base on August 1, 2008, August 8, 2008, and September 3, 2008.
. The appellant admitted to distributing mostly cocaine powder and crack cocaine. The crack cocaine that the appellant converted from the cocaine powder was included within the 198 ounces of cocaine powder he admitted distributing. We refer to the 198 ounces of cocaine powder as ''cocaine.”
. The instruction closely followed Eighth Circuit Model Criminal Jury Instruction 2.08 (2009).
. The appellant had 11 criminal history points, which established a Criminal History Category V.
