Assuming both QI and B18 plays 3 picks next week, then here's what B18 needs:
X = how many points B18 scores next week
P = how many points QI scores next week
X = 3.7931 + (18P/29)
If QI scores 12 from 3 picks he is 89/29 = 3,0690
B18 passes him, if he scores 12 from 3 picks, but not 11 from 3 picks.