Ahigh school student working part time as a cashier had a gross income of $8125 last year if her federal tax rate was 10% and her state tax rate was 4.35% what was the amount withheld from her pay last year in federal tax state tax and fica combined

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