Mr. Jackson plans to watch 312 minutes of television each day during Christmas break he wants to watch more than 468 minutes watching television at the same rate which inequality shows the possible values for D number of days Mr. Jackson must watch television so that he watches more than 468 minutes

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters