Megan’s room was remodeled. The new area of the room is 175% of the previous area. Only the length of the room changed. Square of side four meter. Rectangle is drawn adjacent to it with a width of x.

Part A
Which expression represents the new area of Megan’s room?
4x
x + 4
4(4 + x)
6(4 + x)
Part B
By how many square meters has the area of Megan’s room increased? Enter the number in the box.