Quiz 1 Chapter 2
Email
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) 23-22i (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)The 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