Miley Cyrus in a medley with her "We Can't Stop." Her hit, which currently ranks at No. 3 on the Hot 100, could sell 150,000 by the end of the tracking week. (Her new single "Wrecking Ball," which enters the Hot 100 at No. 50 this week with 90,000 sold, according to Nielsen SoundScan, is projected to jump to 190,000-200,000.)