1.Simplify using the correct arithmetic order of operations.

52 - 16.5 + (19 - 11)²

2. A 128-pound person is holding 5 identical bags of potatoes and, when he stands on a scale, it reads 191 pounds. How much does each bag of potatoes weigh?

3. Find the perimeter of a rectangular room that has a length of 9.4 ft and a width of 17.4 ft.