Argosy University-Washington D.C. to White Plains, NY buses and trains from $36

Here are some trips other travelers have found on Routefriend.
$36
5h 22m
1 stop
GotoBus Metro-North
$36
6h 7m
1 stop
GotoBus Metro-North
$38
6h 19m
1 stop
GotoBus Metro-North
$?
6h 37m
1 stop
Vamoose Metro-North