1.   Solve 2(y - 9) < 6.
    A. {y | y > -6} B. {y | y < 12}
    C. {y | y < 6} D. {y | y > 12}
    Hint

  2.   Solve
    A. B.
    C. D.
    Hint

  3.   Solve x + 4 > 1 or x - 7 < 6.
    A. {x | x > -3} B. {x | x < -3 or x > 13}
    C. all reals D. {x | x < 13}
    Hint

  4.   Choose the graph that is not a function.
    A. B.
    C. D.
    Hint

  5.   Given the function f(x) = x2 + 9, find f(-3).
    A. 18 B. 6
    C. 0 D. 12
    Hint

  6.   State the slope of the line graphed below.
   
    A. B.
    C. D.
    Hint

  7.   The table below shows the land-speed records to the nearest mile per hour. Draw a scatter plot for the data and use it to predict the approximate land-speed record for the year 2005. Assume the rate of increase of speed records remains the same.
   
    A. 700 mph B. 600 mph
    C. 980 mph D. 830 mph
    Hint

  8.   Which equation describes graph A?
   
    A. y = | 2.25x | B. y = 2.25| x | - 1
    C. y = 2.25x - 1 D. y = | x - 1 |
    Hint

  9.   Choose the graph of 3y - 2x > 6.
    A. B.
    C. D.
    Hint

  10.   Solve the system of equations by graphing.


    A. (-6, 2) B. (2, -6)
    C. (2, 6) D. (6, 2)
    Hint

  11.   What is the solution of the system of inequalities?


   
    A. region 2 B.
    C. region 3 D. region 1
    Hint

  12.   Find the minimum value of f(x, y) = 4x - 2y for the polygonal region determined by the feasible region.
   
    A. -14 B. 14
    C. -28 D. 27
    Hint

  13.  
    A. B.
    C. D.
    Hint

  14.   Find A - B if and
    A. B.
    C. D.
    Hint

  15.   Write the matrix equation as a system of linear equations.
    A. -2s + t = 12
5s + 8t = 7
B. -2s = 7
5t = 12
    C. -2s + 5t = 7
s + 8t = 12
D. -2s + t = 7
5s + 8t = 12
    Hint

  16.   What type of function is shown in the graph?
   
    A. step function B. piecewise function
    C. constant function D. absolute value function
    Hint

  17.   What is always true of an n × n matrix?
    A. It is a column matrix. B. It is a row matrix.
    C. It is a square matrix. D. It has at least two rows and two columns.
    Hint

  18.   Solve the system –2x – 4y = 7, 3x + 5y = 9.
    A. B. (71, –39)
    C. D.
    Hint

  19.   Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth.
    A. (1.86, 2.20) B. (–1.86, 2.20)
    C. (1.86, –2.20) D. (–1.86, –2.20)
    Hint

  20.   What is the 4 × 4 identity matrix?
    A. B.
    C. D.
    Hint



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