Create an expression that is equivalent to 3x+2x+x, using the fewest terms. what is the answer to this question? and what is the work and steps?

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false

Can anyone me with this question?