A block of ice contains 40 three-ounce portions of shaved ice. A food truck owner wants to use the block of ice to make as many spheres of ice as possible, each weighing 18 lb. How many spheres can she make?

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

2x+10=36. x being the number of friends.