Which statement is true?

What is the total surface area of this square pyramid?

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?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?