SALT LAKE CITY (AP) — Openings arguments are set for Wednesday in Utah for a California businessman who prosecutors accuse of being a key figure in a $511 million tax credit scheme.  Prosecutors say the scheme was carried out by two executives of a Salt Lake City biodiesel company linked to a polygamous group. The men from the polygamous group pleaded guilty last year to money fraud and other charges and are expected to testify. Lev Aslan Dermen has pleaded not guilty. Dermen has pleaded not guilty to 10 counts, including money laundering and mail fraud.