To clear both of the fractions from fox + 7 = 5 – x, we can multiply both sides of the equation by which of the following numbers?
6, 10, 16, 30

6 or 10
16 or 30
30 only
6, 10, or 30

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