I^8+i^9+i^10 plz explain how you get the answer

Find the actual dimensions of the box. the side length are in meters and integers. the surface area of the box is 104 m2 and volume of the box is 60 m3.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.