Quiz 1 Chapter 2

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Choose the best answer for the following:

1)Solve for x:   4 + 7x - 3x + 2 = 8x + 6.

(a) No solution       (b) 0       (c) 1     (d) 2     (e) None of these

2)Which of the following is an intercept of the graph of 3x + 2y = 9?

(a) (1, 3)        (b) (0, 3)       (c) (3, 0)       (d) (3, 1)     (e) None of these

3)Determine which of the following are zeros of the function f(x) = 2x3+ 5x2 - x + 4.

(a) x = 1       (b) x = 0    (c) x = -3     (d) All of these are zeros.

(e) None of these are zeros.

4)Use a graphing utility to approximate the solution(s) of   .5(x2 - 9x + 19)=0

(a) 2.95, 6.21     (b) 3.38, 5.62        (c) 3.00, 5.50      ( d) -5.65, -3.33  

5)Use a graphing utility to approximate any points of intersection of the graphs of

     y = x - 7 and  y = 3x + 1.

(a) (-4, -11)       (b) (3, -4)     (c) (-1, -4)     (d) (6, -1)     (e) None of these

6)Use a graphing utility to approximate the solutions of  |3x + 10| = 13.

(a) 1     (b) -1, 1     (c) -7.67, 1     (d) 1, 7.67     (e) None of these

7)Write in standard form: (16 + 2i) - (3 + 4i 2).

(a) 9 + 2i        (b) 13 - 2i       (c) 23-22   (d) 17 + 2i     (e) None of these

8) Use a graphing utility to approximate the solution(s)  

    1/(x-3) = 9

a) 3.00       (b) 3.11     (c) 2.90   (d) No solution   (e) None of these

9)graphThe graph shown of y = x3 - 2x2 -3 has how many real zeros?

    (a) 3   (b) 2   (c) 1     (d) none

 

 

10) (2i +3)(i - 4) =

  (a)  -14     (b) 5i -12   (c) -11 -10i     (d) -14 -5i


MTH 112   Joan Bookbinder