Why might using equations be a poor option for solving a problem? A. You might not remember what an equation means without a
diagram, graph, or table.
B. You cannot solve them if they have only one variable.
c. You can never solve an equation for an unknown value.
D. You can solve them using algebra.

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