Find total surface area of the figure shown in square inches.
pls help ty

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?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Can someone, me with this.i really need with this