Describe how to round 678 to the nearest hundred

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)

If m 17 27 90 63 ** picture is attached

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2