A fancy watch was marked up 45% from an original cost of $221.92. Last Friday, Mason bought the watch and paid an additional 9% in sales tax. What was his total cost?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm