project 2 pre calc

Take this test as you would take a test in class. After you are finished, check your 5 work against the answers given in the back of the book. (0. 3) 1. Identify the vertex and intercepts of the graph of y = x2 + 4x + 3. 12 2. Write an equation of the parabola shown at the right. (3. -6) 3. Find all the real zeros of f(x) = 4x3 + 4x3 + x. Determine the multiplicity of each zero. Figure for 2 4. Sketch the graph of the function f(x) = -x3 + 7x + 6. 5. Divide using long division: (3x3 + 4x - 1) + (x2 + 1). 6. Divide using synthetic division: (2x4 - 5x2 - 3) + (x - 2). 7. Use synthetic division to evaluate /(-2) for f(x) = 3x4 - 6x2 + 5x - 1. In Exercises 8 and 9, list all the possible rational zeros of the function. Use a graph- ing utility to graph the function and find all the rational zeros. 8. g(1) = 2/4 - 313 + 161 - 24 9. h(x) = 3x5 + 2x4 - 3x - 2 10 Find all the zeros of the function f(x) = x3 - 7x3 + 11x + 19 and write the polynomial as the product of linear factors. In Exercises 11-14, perform the operations and write the result in standard form. 11. (-8 - 30) + (-1 - 15/) 12. (10 + -20) - (4 - -14) 13. (2 + 7)(6 -1) 14 . ( 4 + 3/)2 - (5+ 1 ) 3 In Exercises 15-17, write the quotient in standard form. 15 8 + 5 5i 16. = 2+ 17. (27 - 1) + (37 + 2) 18. Plot the complex number 3 - 2/ in the complex plane. In Exercises 19-21, sketch the graph of the rational function. As sketching aids, check for intercepts, vertical asymptotes, horizontal asymptotes, and slant asymptotes. 19. h(x) = = 20. g(x) = 1 + 2 21. /(x) = 20- + 9 5x2 + 2 Defense budget, A 22. The table shows the amounts A (in billions of dollars) budgeted for national defense Year in billions for the years 1998 to 2004. (Source: U.S. Office of Management and Budget) of dollars) (a) Use a graphing utility to create a scatter plot of the data. Let / represent the year, 1998 271.3 with f = 8 corresponding to 1998. 1999 292.3 (b) Use the regression feature of a graphing utility to find a quadratic model for the 2000 304.1 data. 2001 335.5 (c) Use a graphing utility to graph the quadratic model with the scatter plot from part (a). Is the quadratic model a good fit for the data? 2002 362.1 (d) Use the model to estimate the amounts budgeted for the years 2005 and 2010. 2003 456.2 (e) Do you believe the model is useful for predicting the national defense budgets for 2004 490.6 years beyond 20047 Explain. Table for 22