In each of the following problems, choose the price per unit per oz. in blanks a. and b, and then select the best buy. a. meat, 1 lb. for $1.95 would = b. meat 2 lb. for $3.52 would = c. the best buy would be .

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