Write an explicit formula for an, the nth term of the sequence 63,21,7

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)

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)