Wk51

Select the correct graph of the following function.f(x) 5^3 +4x^2 -8x +18

6.  Using the factors (x-4) and (x+2), find the remaining factor (s) of  f(x)  = x^3 + 2^ -14x -24 and write the polynomial in fully factored form.

7. Select the correct graph of the function.

y= x^5 - 5x^3 +3x

8.  List the possible rational zero of   .

      f(x) =x^3 + x^2 - 9x - 9

9.  Find a mathematical model representing the statement. (Determine the constant of proportionality). Show all work.  P varies directly as x and inversely as the square of y (P= 3/2 when x = 25 and y = 10)

10. Write f(x) = x^3 +7x^2 + 22 in the form f(x) = (x-k) q(x) + r when k= -5

11. Use the Descartes rule of sign to find the number of possible positive, negative,  and no real roots for the following equation. Display your answer in a table. 4x^7 + 9x^2 +5x + 10 =0