The top and bottom margins of a poster are 1 inches and the side margins are each 2 inches. The area of printed material on the poster is fixed at 25 square inches. See the image below 1 in Printed Material 2 in 25 square inches 2 in 1 in (You can click on the graphic to enlarge the image.) Let w be the width (in inches) of the poster and let h be the height (in inches) of the poster. Find the dimensions of the poster with the smallest area. (a) Write the formula for the area A(w) of the entire poster as a function of w only: A(W) = square in., for W E (4, co). (b) What are the dimensions of the poster with the smallest area? W = in. h = in