For each function, find the equation for the slope of the secant line between any general point on the function (a + h, f(a + b)) and the given x-coordinate of another point:
i) f(x) = 4x² + 5x + 30; a = 2
ii) Use each slope equation you found in part a) to estimate the slope of the tangent line at the point with the given x-coordinate: