14. Solve 5^2x + 1 >50. Round to the nearest ten-thousandth.
F {x | x > 4.5000} G {x | x >0.7153} H{x | x>0}
J {x | x > 2.4307}

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