The point P(5, 33) lies on the curve y = x2 + x + 3. Let Q be the point (ac, a2 + ac + 3). a. Find the slope of the secant line PQ for the following values of x. (Round your answers to within three decimal places if necessary, but do not round until your final computation.) If x = 5.1, the slope of PQ is If x = 5.01, the slope of PQ is If x = 4.9, the slope of PQ is If x = 4.99, the slope of PQ is b. Based on the above results, estimate the slope of the tangent line to the curve at P(5, 33). Estimate