How can you use dilations to solve real-world problems?

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 inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

What’s the answer ? use the picture to see the problem