Find the geometric mean of 5 and 320.

a.
35
b.
40
c.
45
d.
50

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Which graph represents the equation y =4x

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