Rectangle PQRS is graphed on a coordinate plane with vertices P(-2, 1), Q(-2, 4), R(-4,4), and S(-4,1), as shown below. Rectangle PQRS is reflected over the y-axis and then translated 2 units to the left. What are the coordinates of P?
A (-4,-1)
B (0,1)
C (1,0)
D (4,1)

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