A model for the surface area of a human body is given by the function S = f(w, h) = 0.1091w0.425h0.725 where w is the weight (in pounds) , h is the height (in inches) , and S is measured in square feet. Calculate and interpret the partial derivatives. (a) ?S ?w (160, 68) = 0 Incorrect: Your answer is incorrect. Correct: Your answer is correct. (rounded to four decimal places) This is the rate at which Correct: Your answer is correct. increases with respect to Correct: Your answer is correct. when an individual weighs Incorrect: Your answer is incorrect. lbs and has a height Incorrect: Your answer is incorrect. in. (b) ?S ?h (160, 68) = 0 Incorrect: Your answer is incorrect. Correct: Your answer is correct. (rounded to three decimal places) This is the rate at which Correct: Your answer is correct. increases with respect to Correct: Your answer is correct. when an individual weighs Incorrect: Your answer is incorrect. lbs and has a height Incorrect: Your answer is incorrect. in.