tryceclark tryceclark 26-03-2021 Mathematics contestada A triangle has a base of (x+9) feet and a height of (4x+4). The expression below represents the area of the triangle. 12(x+9)(4x+4) Which of the following choices represents the simplified form of the expression above? Select one: A. 4x2+36x+36 B. 2x2+80x+18 C. 2x2+18x−18 D. 2x2+20x+18