Which best describes the graph of the cubic function f(x) = x3 + x2 + x + 1?

Acircle has a circumference of 28.36 units what is the diameter of the circle

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

If g^-1(x) is the inverse of g (x) which statement must be true