Which of the following exponential functions is represented by the data in the table? A) ƒ(x) = 3x
B) ƒ(x) = x3
C) ƒ(x) = (1∕3)x
D) ƒ(x) = x1∕3

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