1.   Solve the system of equations 2x + 3y = -7 and x - y = 4 by graphing.
    A. B.
    C. D.
    Hint
  2.   The equation 2x - y + 3z = 5 represents _____________
    A. a plane. B. none of these.
    C. a line. D. a circle.
    Hint
  3.   The graph |y| = 4 - |2x| is symmetric with respect to __________.
    A. both the x-axis and
the y-axis		 B. the y-axis
    C. neither the x-axis nor
the y-axis		 D. the x-axis
    Hint
  4.   Which is an even function?
    A. y = x2 B. y = 2x - 1
    C. y = x D. y = -x
    Hint
  5.   Which is the graph of y x3 + 1?
    A. B.
    C. D.
    Hint
  6.   Ten years ago, Mary invested $2500. Four years later, she invested $3000. Set up an equation that determines the current value of the two investments T(x) if each earns 10% annual interest per year.
    A. T(x) = 2500(1.1)10 +
3000(1.1)6		 B. T(x) = 3000(1.0)10 +
2500(1.1)6
    C. T(x) = 3000(1.0)10 +
2500(1.1)4		 D. T(x) = 2500(1.1)10 +
3000(1.1)4
    Hint
  7.   Solve .
    A. 5, 1 B. 2
    C. 5 D. 5, 2
    Hint
  8.   The terminal side of one angle in standard position contains the point with coordinates (3, -2). The terminal side of another angle in standard position contains the point with coordinates (-3, 2). Compare the tangents of these angles.
    A. They are not equal. B. One is twice the other.
    C. They are equal. D. One does not exist.
    Hint
  9.   In find c if A = 36°, B = 101°, and b = 42.7.
   
    A. about 29.7 units B. about 40.2 units
    C. about 31.8 units D. about 25.3 units
    Hint
  10.   In given a = 22, b = 39 and c = 19, find B.
    A. about 36.0° B. about 126.0°
    C. about 144.0° D. about 54.0°
    Hint
  11.   State the period for the function .
    A. 4 B. 8
    C. 16 D. 2
    Hint
  12.   Write an equation of a cosine function with amplitude 3, period , phase shift , and vertical shift 2.
    A.
    B.
    C.
    D.
    Hint
  13.   Suppose the equation models a buoy bobbing up and down in the water. The equilibrium point is y = 0. Describe the location of the buoy when t = 7.
    A. 3 units above equilibrium B. 3 units below equilibrium
    C. 6 units below equilibrium D. 6 units above equilibrium
    Hint
  14.   Which equation has an undefined slope?
    A. y = 4x + 2 B. x = 4
    C. y = 4x D. y = 4
    Hint
  15.   How can you tell if two lines are perpendicular?
    A. The slopes are reciprocals. B. The slopes are the same.
    C. The slopes are opposites. D. The slopes are opposite reciprocals.
    Hint
  16.   What is the value of y when x = 2?
   
    A. 1 B. 2
    C. undefined D. 0
    Hint
  17.   Determine the coordinates of a dilated figure with a scale factor of 1.5 if the vertices of the original are A(3,5), B(-4,5), C(-4,-5), and D(3,-5)
    A. A(1.5,3.5), B(-5.5,3.5), C(-5.5,-6.5) and D(1.5,-6.5)
    B. A(4.5,6.5), B(-2.5,6.5), C(-2.5,-3.5) and D(4.5,-3.5)
    C. A(1.5,2.5), B(-2,2.5), C(-2,-2.5), and D(1.5,-2.5)
    D. A(4.5,7.5), B(-6,7.5), C(-6,-7.5) and D(4.5,-7.5)
    Hint
  18.   Use matrices to determine the coordinates of the image of
with vertices A(-3,4), B(-5,2) and C(-6,5) once it is rotated 90°.
    A. A'(3,-4), B(5,-2) and C'(6,-5)
    B. A'(-4,-3), B(-2,-5) and C'(-5,-6)
    C. A'(-3,-4), B(-5,-2) and C'(-6,-5)
    D. A'(3,4), B(5,2) and C'(6,5)
    Hint
  19.   Which is the graph of y ?
    A. B.
    C. D.
    Hint
  20.   Use a graphing calculator to graph f(x) = x5 + x4 - x3 + 4 and to determine and classify the extrema.
    A. relative maximum (0.487, 3.968)relative minimum (1.24,5.34)
    B. relative minimum (-2,-4) relative maximum (0,4)
    C. relative maximum (-2,-4)relative minimum (0,4)
    D. relative maximum (-1.27, 5.35)relative minimum (0.487, 3.968)
    Hint

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