Which of these numbers is prime explane how/why those are prime? 30 31 32 33

An angle that measures between 90 and 180° is called a(,

Does the point (1, sqrt 7) lie on circle shown.

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