Use the given graph. Determine the period of the function. ( - Sort of Confused on the periods, would I find it using the bottom or top periods? Because it would be different answers whether is would be top or bottom. )
- - With It being Top Period it would be 1.5 - And with it being Bottom Period it would be 3.

Select one:
a. 6
b. 1.5
c. -0.9
d. 3

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