Describe how can you simplify division equation

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Assemble the proof by dragging tiles to the statements and reasons column

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?