9. An employee's monthly productivity M, in number of units produced, is found to be a function of the number t of years of service. For a certain product, a productivity function is shown below. Find the maximum productivity and the year in which it is achieved. M(t) = - 3t + 162t + 160, Osts 40 The maximum productivity is achieved in year The maximum productivity is units. 10. For a dosage of x cubic centimeters (cc) of a certain drug, the resulting blood pressure B is approximated by the function below. Find the maximum blood pressure and the dosage at which it occurs. B(x) = 400x - 4000x , 0s x = 0.10 The maximum is obtained for a dosage of (Round to two decimal places as needed.) The maximum blood pressure obtained is (Round to two decimal places as needed.)12. Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur. f(x) = x - 8x - 5, [2,5] The absolute maximum value is at x = (Use a comma to separate answers as needed.) The absolute minimum value is at X = (Use a comma to separate answers as needed.)