1.   Find the zero of the function f(x) = -8x + 4.
    A. -2 B. 2
    C. D.
    Hint

  2.   Which is the graph of g(x) = |6 - |2x||?
    A. B.
    C. D.
    Hint

  3.   Which is the graph of the inequality y |x - 3|?
    A. B.
    C. D.
    Hint

  4.   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 = 2y whose endpoints are (200, 100) and (800, 400) and whose coordinates are integers.
    B. All points on the segment of the line 2x = y whose endpoints are (100, 200) and (400, 800) 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

  5.   If you use the elimination method to solve the system of equations
3x - 4y = 9 and 2x + 3y = 7, which of the following would be the best method?

Method I: Multiply both sides of the first equation by 2, and multiply both sides of the second equation by 3. Then add the two equations.

Method II: Multiply both sides of the first equation by 3, and multiply both sides of the second equation by 4. Then add the two equations.

    A. Method I B. Method II
    C. Neither Method I nor Method II is correct. D. Both Method I and Method II are correct.
    Hint

  6.   Find the values of x and y for which the matrix equation
is true.
    A. x = -3, y = -1 B. x = -1, y = -3
    C. x = -3, y = 1 D. x = 1, y = -3
    Hint

  7.   A triangle ABC has vertices A(3, -1), B(4, -2), and C(7, 1). Find the coordinates of the dilated triangle for a scale factor of 3.
    A. A'(21, 3), B'(12, -6),
C'(-9, -3)
B. A'(9, -3), B'(12, -6),
C'(21, 3)
    C. A,/i>'(12, -6), B'(21, 3),
C'(-9, -3)
D. A'(-3, 9), B'(-6, 12),
C'(3, 21)
    Hint

  8.   Find the inverse of .
    A. B.
    C. D.
    Hint

  9.   Which of the following is a graph of the inequalities
l + g > 100 and l > 70?
    A. B.
    C. D.
    Hint

  10.   The profit for each unit of lumber is $40 and the profit for each unit of plywood is $60. Write a profit function P(x, y) if x = the number of units of lumber and y = the number of units of plywood.
    A. P(x, y) = 40x + 60y B. P(x, y) = 60x + 40y
    C. P(x, y) = 60x - 40y D. P(x, y) = 40x - 60y
    Hint

  11.   Which function does not have a zero?
    A. f(x) = x - 5 B. f(x) = –5x +3
    C. f(x) = 3x + 5 D. f(x) = -5
    Hint

  12.   Use two ordered pairs to write the equation of a best-fit line.
   
    A. y = 5x + 75 B. y = 3x + 72
    C. y = 5x D. y = 3x
    Hint

  13.   Graph the data on a scatter plot.
   
    A. B.
    C. D.
    Hint

  14.   A bank charges a $10 fee if the account balance is less than $200. If the balance is in between $200 and $500 there is a $5 fee. If at least $500 is in the account, there is no fee. What type of function best represents this situation?
    A. step function B. greatest integer function
    C. piecewise function D. absolute value function
    Hint

  15.   Which is the graph of the inequality 2x + y + 3 >0?
    A. B.
    C. D.
    Hint

  16.   Choose the best method to solve the system of equations x + y = 2
and y = 3x - 4.
    A. Eliminate y B. Eliminate x
    C. Graphing D. Substitution
    Hint

  17.   Given A = [3 -2], C = , find AC.
    A. [14 3 13] B.
    C. impossible D. [-10 -4 -2]
    Hint

  18.  
    A. B. impossible
    C. D.
    Hint

  19.   Name the coordinates of the vertices of the polygonal convex set.
   
    A. (-4,-1), (-4,3), (-2,-4), (4,-2) B. (-4,-1), (-4,3), (-2,4), (4,2)
    C. (-4,-1), (-4,6), (-2,4), (4,-2) D. (-4,-1), (-4,3), (-2,4), (4,-2)
    Hint

  20.   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. 2 B. alternate optimal solutions
    C. infeasible D. unbounded
    Hint



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