the perimeter of a rectangular room is 140 feet. Let x be the width of the room and y be the length of the room. select all equations that could model this situation.

a. 2x + 2y= 140
b. 2x + y= 140
c. 2(2x + 2y)=140
d. x+y=70
e. 140= 2(x + y)​