Gina has to pay monthly installments for a period of 24 months to her car dealer. after 24 months she can either return the car or buy it at its lower resale value. has she bought the car on a loan or is it on lease?

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