1.   The math scores, x, and chemistry scores, y, for six students are given in the table. Use a graphing calculator to find the Pearson product-moment correlation.
   
    A. about 0.71 B. about 0.74
    C. about 0.65 D. about 0.68
    Hint

  2.   The compound inequality 300 < x + y < 1200 and x = 2y is shown in the graph below. List the possibilities of Bobcats and Lions produced to meet the imposed conditions.
   
    A. All points on the segment of the line 2x = y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers.
    B. All points on the segment of the line 2x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers.
    C. All points on the segment of the line x = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers.
    D. All points on the segment of the line x = 2y whose endpoints are (100, 200) and (400, 800) and whose coordinates are integers.
    Hint

  3.   Determine the symmetry of f(x) = x7.
    A. symmetric with respect to the origin B. not symmetric
    C. symmetric with respect to only the y-axis D. symmetric with respect to only the x-axis
    Hint

  4.   A family has a monthly net pay N which is 70% of their gross monthly pay G. They decided to subtract their monthly food allowance of $350 from their monthly net pay and invest 5% of the remainder. Write an equation for the investment each month I, given the above restrictions.
    A. I = 0.95(0.7G - 350) B. I = 0.95(0.3G - 350)
    C. I = 0.05(0.7G - 350) D. I = 0.05(0.3G - 350)
    Hint

  5.   Determine whether the function f(x) = 2x2 - x + 2 is continuous at x = 2.
    A. Yes, because the function is defined at x = 2. B. None of these are correct.
    C. Yes, because the function approaches the same y-value 8 on the left and right sides
of x = 2.
D. Yes, because the function is defined at x = 2 and approaches y = 8 on the left and right sides of x = 2.
    Hint

  6.   State the degree of the polynomial function f(x) = x4 - 2x2 + 3x - 1.
    A. 3 B. 4
    C. 5 D. 2
    Hint

  7.   The factors of x2 - 8x - 20 = 0 are ____.
    A. (x + 2) and (x + 10) B. (x + 2) and (x - 10)
    C. (x - 2) and (x - 10) D. (x - 2) and (x + 10)
    Hint

  8.   Use the Upper Bound Theorem to find an integral upper bound and the Lower Bound Theorem to find an integral lower bound of the zeros of the function f(x) = x3 - 2x2 - x + 6. All real zeros of f(x) can be found in the interval.
    A. -3 x -2 B. -2 x 3
    C. 2 x 3 D. 1 x 2
    Hint

  9.   Solve > 0.
    A. -1 < x < 0 or x > 1 B. -2 < x < 0 or x > 2
    C. -2 < x < 0 or x < 1 D. -1 < x < 0 or x > 2
    Hint

  10.   Evaluate sin (arctan ). Assume that the angle is in Quadrant I.
    A. B.
    C. D.
    Hint

  11.   Change radians to degree measure.
    A. 145° B. 135°
    C. -145° D. -135°
    Hint

  12.   Find sin .
    A. B. 1
    C. - D. -1
    Hint

  13.   Determine the exact value of cos, given sin and 0° < < 90°
    A. B.
    C. D.
    Hint

  14.   Find the value of sin (x + y) if , sin x = , and
sin y = .
    A. B.
    C. D.
    Hint

  15.   Find a linear equation that can be used as a model for the data shown.
   
    A. B.
    C. D.
    Hint

  16.   Choose the best method to solve the system of equations 4x + y = 6
and 2x - y = 10.
    A. Eliminate x B. Graphing
    C. Eliminate y D. Substitution
    Hint

  17.   Find the maximum value of f(x, y) = 2x + y - 4 for the system of inequalities:
y -3x + 1
y x - 4
x 0
y 0
    A. alternate optimal solutions B. unbounded
    C. infeasible D. 2
    Hint

  18.   Write an equation in slope-intercept form of the line whose parametric equations are x = 3t - 4 and y = -t + 8.
    A. B. y = -3t + 12
    C. y = 8 - x D. y = 3x - 4
    Hint

  19.   Given the coordinates of a rectangular prism, represent them as a vertex matrix: A(1, 5, 3), B (1, 5, -1), C (1, -3, -1), D (1, -3, 3), E (-4, 5, 3), F (-4, 5, -1), G (-4, -3, -1), H (-4, -3, 3)
    A.
    B.
    C.
    D.
    Hint

  20.   Which of the following matrices represents a dilation by a scale factor of 2?
    A. B.
    C. D.
    Hint



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