Write an expression that is equivalent to 4(b+2)-3b

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2

Need asap i will give brainliest and 98 points classify each pair of numbered angles corresponding, alternate interior, alternate exterior or none o these