Ruben wants to plant a rectangular vegetable garden. he will use a patch of land that is 3 3 times as long as it is wide. ruben also decides to leave a 3 3 -inch border along the perimeter of the garden, where nothing will be planted. this leaves ruben with a total planting area of 180 180 square inches. which equation correctly describes the available planting area for the vegetable garden? 180=4x−3 180=4x−3 180=3 x 2 −24x+36 180=3x2−24x+36 180=3 x 2 +12x−6 180=3x2+12x−6 180=3 x 2 −12x+9 180=3x2−12x+9