A billboard designer has decided that a rectangular sign should have 4-ft margins at the top and bottom and 3-ft margins on the left and right sides. Furthermore, the billboard should have a total area of300ft2(including the margins).Ifx denotes the width (in feet)of the billboard (including the margins), find a function in the variable x giving the area of the printed region of the billboard.Area, as a function ofx= (x-6)(300x-8) Determie the domain of the function for area. Enter your answer using interval notation.Domain of the function for area = (6,)