A ball is thrown straight up with an initial velocity of 128 ft/sec, so that its height (in feet) after x seconds is given by h(x) = 128x 16x^2. dy Sally finds the derivative: 128 32x. dy She evaluates dr 5 - 32. What is the equation of the tangent line at x - 5? 300 y (5,240) -2 10. -501 13(x)-128-x-16-x2 x 10