The lenght of a living room is 12 feet and its width is 10 1/2 feet. The lenght of the room is being expanded by x feet. Choose an expression to represent the new area of the living room in square feet and the expanded form of the expression. Select all that apply

Step-by-step explanation:

The length of a living room is 12 feet and its width is 10 1/2 feet. The length of the room is being expanded by x feet. Assuming the increase in length is only on one side of the room, it means that the new length would be (12 + x) feet

The formula for determining the area of a rectangle is expressed as

Area = length * width

Therefore, an expression to represent the new area of the living room in square feet would be

10.5 (12 + x)

New area = (126 + 10.5x) square feet