Write the quadratic function in vertex form.
f(x) = -4x^2 - 2x -3
a) f(x) = -4(x + 2)^2 - 3
b) f(x) = -4(x + 14)^2 - 11/4
c) f(x) = -4(x + 14)^2 - 15/4
d) f(x) = -4(x + 14)^2 - 41/16
no division

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