If k(x) 5x6, which expression is equivalent to (k+ k)(4)?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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?