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T. [-7TrommST DETAILS LAKPCALCLIMES 2.5.053. IVIT NOTES ASK TOUR TEACHER PRACTICE ANOTHER Consider the following. f(x) = x3 + x2 - 9x - 9 (a) List the possible rational zeros of f. (Enter your answers as a comma-separated list. ) X : (b) Sketch the graph of f so that some of the possible zeros in part (a) can be disregarded. f(x) 30 f(x) 30 20- 20 10 10 -5 5 X 5 X -10) - 10 -20 20 O -30 O - 30 f(X) 30 f(x) 30 20 20 1 -5 5 X 10 -5 5 X -10 -20 - 20 O O -30 (c) Determine all real zeros of f. (Enter your answers as a comma-separated list. ) X =Submit Answer 2. [-/1 Points] DETAILS LARPCALCLIM3 2.5.041. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider the following. F (x) = x4 - 3x2 + 2 (a) Use the zero or root feature of a graphing utility to approximate the zeros of the function accurate to three decimal places. (Enter your answers as a comma-separated list.) X = (b) Determine the exact value of one of the zeros (use synthetic division to verify your result). X = (c) Factor the polynomial completely. f ( x ) = 3. [0/1 Points] DETAILS PREVIOUS ANSWERS LARPCALCLIM3 2.5.114. MY NOTES ASK YOUR TEACHER The ordering and transportation cost C (in thousands of dollars) for machine parts is C = 100 200 X x2 x + 30 x 2 1 where x is the order size (in hundreds). In calculus, it can be shown that the cost is a minimum when 3x3 - 40x2 - 2400x - 36,000 = 0. Use a calculator to approximate the optimal order size to the nearest hundred units. x units Need Help? Watch It