Acertain drug is made from only two ingredients: compound a and compound b. there are 7 milliliters of compound a used for every 4 milliliters of compound b. if a chemist uses 308 milliliters of compound b, how many milliliters of the drug will be made ?

The answer is 539. 539/308= 7/4

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