Problem refer to the graph of y = f(x) = x2 + x shown.

(A)Find the slope of the secant line joining (2,f(2)) and (4,f(4)).
(B) Find the slope of the secant line joining (2, f(2)) and (2 + h,f(2 + h)).
(C) Find the slope of the tangent line at (2,f(2)).
(D) Find the equation of the tangent line at (2,f(2)).