In the algebraic expression 7 divided by y what is the coefficient of y

Solve the system of equations y= 3/2 - 1, -x+ y =-3

25 ! i need asap! ! ill mark brainliest!

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