Amanda has a rectangle fish aquarium that holds 1,280 in3 of water, the length of the aquarium is 16 inches and the height is 10 inches. what is the width of the aquarium? which variable did you solve for and why?

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?