A utility company is running three generators (where the system demand for the current time. period is 650 MW), and has the following operating costs in dollars per hour and corresponding generation...

Extracted text: A utility company is running three generators (where the system demand for the current time. period is 650 MW), and has the following operating costs in dollars per hour and corresponding generation range (noted below): $ C (P1) = 200 + 20p1 + 0.01p?, 200MW < p1="">< 400mw="" $="" c2(p2)="150" +="" 30p2="" +="" 0.02p3="" h="" 100mw="">< p2="">< 300mw="" $="" c;="" (p3)="100" +="" 45p3="" +="" 0.05p="" 50mw="">< p3="" s="" 200mw="" %3d="" determine:="" 1)="" the="" economic="" dispatch="" of="" generators="" during="" this="" hour="" 2)="" the="" total="" operating="" cost="" during="" this="" hour="" 3)="" the="" marginal="" electricity="" cost="" of="" the="" system="" 4)="" at="" a="" certain="" time="" period="" the="" system="" price="" is="" $55="" per="" mwh="" ($/mwh),="" what="" is="" the="" system="" demand="" during="" this="" time="">