Identify the closest perfect squares less than and greater than the radicand below, respectively.
35 ( square root)
A 25 and 36
B. 25 and 40
C. 30 and 36
D 30 and 40

Pls no explanation I’m in a rush

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?

Ineed some on this. not sure how to solve.

Find the area of an equilateral triangle (regular 3-gon) with the given measurement. 9-inch perimeter