Which ordered pair represents the solution to the system of equations? {−5x+7y=−196x−2y=10

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Quadrilateral abcd is translated up and to the right, and then rotated about point q. which congruency statement is correct?

Pleas ! i just cant seem to get it right! choose: congruent or proportional choose: cf or ce or bc choose: segment addition postulate or cpctc