Find the length of the segment b

Every time you drive you will experience a combination of driving conditions and environments.

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 location of maximum over the interval [-3,1.5] for the graphed function?