Can you help me?

(1) (10pts) Convert the following parametric equations into a rectangular equation by eliminating the parameter. Then sketch its graph being sure to include the orientation of the curve. x = et O X y = est 1(2) (10pts) Find dy and day de2, and find the slope and concavity (if possible) of x = 4 cost, y = 4 sint for the parameter t = 1/4.(3) (10pts) Calculate the arc length of x = cos 0 + 0 sin 0 y = sin 0 - 0 cos 0 over the interval 0