Select the better deal in the pair. Then give the unit rate for the better deal. $175/7g
or
$224/8g

The
(select) second or first
deal is better. The unit rate of the better deal is $

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