Consider this right triangle. 2x + 3
х
C
42x + 2
B
Enter the ratio equivalent to cos(A).

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?