Solve the following linear programming problem.
maximize:
zequals9xplus11y
subject to:
3xplus7yless than or equals21
9xplusyless than or equals21
  xgreater than or equals0, ygreater than or equals0

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c