Brandon bought p pounds of tomatoes for $1.48 per pound. He gave the clerk a $20 bill. Which expression represents the amount of change Brandon should receive from $20?

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