Which ordered pair is a solution of the equation?
y -4 = 7(x – 6)

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?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?