HURRY PLS NUMBER 18 AND 19 PLS PLS ASP

Consider circle o, where and . m∠bpd °. °.

What function has a range {yly< 5}? question on picture above^

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