Which location is closest to sea level? how do u know?

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.