What is the proper name of the quadrilateral

Will give brainliest what is the value of x? enter your answer in the box.

Could somebody me with this radical simplification?

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.