The school wishes to purchase 2500 pens and have discovered that 3 stores sell the same model pen. which store has the best buy ? store a sells 15 pens for $0.50, store b sells 50 pens for $ 1.70 and store c sells 30 pens for $0.90

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