The office and the living room in a tiny house share a wall. The area of the office is 28 square feet. The area of the living room is 63 square feet. The expression 28+63 represents the total area in square feet. Which of the following expressions also show the total area of the two rooms? Choose ALL that apply. 7 multiplied by 4 + 7 multiplied by 9 7(4+9) 9(4+7) 9 multiplied by 4+ 9 multiplied by 7