WE PROPOSE A BROADBAND OBSERVATION OF THE TRANSIENT ULX NGC 925 ULX-3 FOR 40 KS WITH XMM-NEWTON QUASI-SIMULTANEOUS WITH A 100KS OBSERVATION WITH NUSTAR. THIS RECENTLY-DISCOVERED SOURCE EXHIBITS EXTREME LEVELS OF LONG-TERM VARIABILITY OF
$60,101FY2021National Aeronautics and Space AdministrationNASA
California Institute Of Technology, Pasadena CA