The gure has a tangent line drawn at a labeled point. (a) Estimate a second point on the tangent line. (it, p) =( 4.5,9300 ) X (b) Calculate the rate of change of the function at the labeled point. (Round your answer to one decimal place.) :I thousand employees per year (c) Calculate the percentage rate of change of the function at the labeled point. (Round your answer to three decimal places.)