The figure has a tangent line drawn at a labeled point. 9500 p(t) thousand employees 9400 9300 (4.8, 9243) 9200 9100 t years since 2000. 8 (a) Estimate a second point on the tangent line. (t, p) (b) Calculate the rate of change of the function at the labeled point. (Round your answer to one decimal place.) thousand employees per year (c) Calculate the percentage rate of change of the function at the labeled point. (Round your answer to three de places.) % per year