Round the number to the nearest tenth. 3.4x + 2 = 2.3x - 6

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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