2.1 km = ? Cm pls help:(

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

What is the solution of the equation? 35√(x+2)3+3=27

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2