Sandy works at a clothing store. She makes $9 per hour plus earns 15% commission on her sales. She worked 74 hours over the last two weeks and had a total of $2,057 in sales before taxes.

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