Bank a charges a monthly service fee of $2.00 and per-check fee of $0.05, while bank b charges a monthly service fee $1.50 and a per-check fee of $0.10. which of these numbers of monthly checks will cause bank a to charge less in fees than bank b?

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