The expected value of the number of points for one roll is
A) 0
B) 3
C) 6

$22. if larry's profit were to minimize by one for every hour his store were to be closed, we would subtract 30 by 8.

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )