1.   Solve
    A. B.
    C. D.
    Hint
  2.   Choose the graph of
    A. B.
    C. D.
    Hint
  3.   State the solution of the system of equations graphed below.
   
    A. (3, -1) B. (-1, 3)
    C. (0, 3) D. (3, 1)
    Hint
  4.   The equations y = -0.38x + 56.6 and y = 0.38x + 43.4 represent the percent of men and women, respectively, receiving bachelor's degrees, where x is the number of years since 1968. In approximately what year did the same percent of men and women receive bachelor's degrees?
    A. 1990 B. 1985
    C. 1980 D. 1995
    Hint
  5.   What is the value of the determinant?
   
    A. -12 B. 12
    C. -3 D. -8
    Hint
  6.   Use Cramer's rule to solve the system of equations.
    A. (-0.4, -0.2) B. (0.011, 0.0055)
    C. (0.4, 0.2) D. (0.2, 0.4)
    Hint
  7.   Solve the system of inequalities by graphing.
    A. B.
    C. D.
    Hint
  8.   Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write the function that describes the cost of the quilt.
    A. f(b, w) = 0.80b + 1.20w
    B. f(b, w) = 4b + 7w
    C. 96 = 4b + 7w
    D. 96 = 0.80b + 1.20w
    Hint
  9.   Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write an inequality that expresses the total number of squares to be sewn.
    A. B.
    C. D.
    Hint
  10.   Find the dimensions of A6 × 3 · B3 × 1.
    A. 6 × 3 B. 3 × 1
    C. 3 × 3 D. 6 × 1
    Hint
  11.   Find the determinant of
    A. -21 B. 0
    C. -16 D. -11
    Hint
  12.   Write the matrix equation as a system of linear equations.
    A. -2s + t = 7
5s + 8t = 12		 B. -2s + 5t = 7
s + 8t = 12
    C. -2s + t = 12
5s + 8t = 7		 D. -2s = 7
5t = 12
    Hint
  13.   Graph the relation represented by y = x2 – x + 1.
    A. B.
    C. D.
    Hint
  14.   The table shows the average heights (in centimeters) of females ages 1-14. If this trend continues, about how tall will an average fifteen-year-old female be?
   
    A. 160.3 cm B. 168.5 cm
    C. 163.7 cm D. 156.9 cm
    Hint
  15.   What is the inequality represented in the graph?
   
    A. 3x + 2y 0 B. 3x – 2y 0
    C. 3x + 2y 0 D. 3x – 2y 0
    Hint
  16.   Solve the system of equations.

–2x + 3y = 7
4x – 6y = 8.
    A. y = –22, x = –31 B. no solution
    C. y = –22, x = –36.5 D. y = –22, x = 29.5
    Hint
  17.   If and find 3A + 2B.
    A. B.
    C. D.
    Hint
  18.   Which of the following is true concerning matrix multiplication of three matrices A, B, and C?
    A. C(A + B) = CA + CB
    B. AB = BA for no cases
    C. AB = BA for all cases
    D. (A + B)C = CA + CB
    Hint
  19.   What are the coordinates of the vertices of the image of rectangle HJKL with H(4, 1), J(-3, -2), K(2, -6), and L(-4, 5) after a reflection across the x-axis?
    A. H'(4, –1), J'(-3, 2), K'(2, 6), L'(-4, -5)
    B. H'(-4, –1), J'(3, 2), K'(-2, 6), L'(4, -5)
    C. H'(-4, 1), J'(3, -2), K'(-2, -6), L>'(4, 5)
    D. H'(-4, –1), J'(-3, -2), K'(-2, -6), L'(-4, -5)
    Hint
  20.   What is the 4 × 4 identity matrix?
    A. B.
    C. D.
    Hint

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