How do you write 3 less than the product of 4 and -24

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?

What are the values of each variable in the diagram below?

Atransformation t : (x,y) (x-5,y +3) the image of a(2,-1) is