3x+6y=-18 2y=3x-22
Complete the second equation below so that the terms in the system align.
3x+6y=-18

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

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?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.