Suppose the supply function for a commodity is given by  Sx=…

Suppose the supply function for a commodity is given by  Sx=0.4×2+6x+15{“version”:”1.1″,”math”:”Sx=0.4×2+6x+15″}.  Find the producers’ surplus when  x=25 {“version”:”1.1″,”math”:”x=25 ”} units are sold.   The producers’ surplus is: