Plz help need answers quickly I have not so long

If m 17 27 90 63 ** picture is attached

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

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents