8x-8=7x x=? solve the equation for x

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Give me the equations of two lines that have the same slope but are not parallel.

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?