Which of the following is equivalent to (x + 4)(3x2+2x)?
O
A. (x+4)(3 x2)+(x+4)(2x)
O
B. (x+4)(2x)+(x+4)(3x)
O
c. (x+4)(2x)•(x + 4)(3x)
O
D. (x + 4)(3x?)•(x+4)(2x)

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

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

What is 140 squared pleas me i am dumb