3 1/8 - b = 1 3/4
how do I figure out what b is?

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)

Prove that quadrilateral is a rhombus.

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?