Multistep: bart and sam played a game in which each player earns or loses points in each turn. a player's total score after two turns is the sum of his points earned or lost. the player with the greater score after two turns wins. bart earned 123 points and lost 180 points. sam earned 185 points and lost 255 points. which person won the game? explain.

Ineed i been stuck on this question since yesterday

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

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?