Tracy has 94 1/4 inches of string that she uses for making bracelets. she uses 7 1/4 inches of string to make each bracelet. how many bracelets can tracy make?

Ineed to learn how to solve this problem

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?

Find the values of the variables and the lengths of the sides of this kite.