In a rectangle has vertices (3,7), (15,7), (3,-2), and (15,-2), then the length of diagonal is?

For the function, f(x) = -5x 2, find f(-4).

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

Answer for 10 points show work you guys in advanced < 3