1 A chef cooked vegetables for 22 customers. The chef cooked 1/3 pound of potatoes

and 1/4 pounds of green beans for each customer.
How many pounds of vegetables did the chef cook for these customers all together? PLEASE LET IT BE A BIG FRACTION (A. 21 5/12) (B. 3 1/7) (c. 12 5/6) (d. 7 7/12)

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