Mysterious Artist(s)

I acquired both of these canvas paintings 4yrs ago on Craigslist for $250 because they were rich in color and had both a contemporary and vintage look. I don't know who the artist, or artists are, but would like to know. I would like to frame these one day. It's either acrylic or oil, but I don't know how to tell the difference. Any information that you may have about these pieces would be greatly appreciated