Anyone know this?

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

If f(x) = 6x – 4, what is f(x) when x = 8? a2 b16 c44 d52

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.