What is the scale factor of ARST to AUVW?

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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?