Can you teach me how to show work for these questions: if f(x)=3x+3, g(x)=4x^2-6x+3, and h(x)=5x^2-7, find the following. 53. f(4) 54. f(-1) 55. h(-3) 56. h(0) 57. g(2) 58. g(1) 59. g(0) 60. h(-2)

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