if If I want to cook something at 160° and my oven only works for 350° and the recipe for the 160 degrees is 25 minutes how much would it be for the 350 degrees oven

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