Ireally need on this question and show your work i will mark brilliant

the population of a city is 645 people less than it was five years ago the current population is 13,500 what was the population five years ago?

645 less than the current population 13,500 
13,500 - 645 = 12,855 
I hope this helpful to you !

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