1.   Given f(x) = 3x + 2x - 2 and g(x) = 4x + 1, find
    A. 3x2 - 2x - 3 B.
    C. 3x2 + 6x - 1 D.
    Hint
  2.   The revenue for the sale of x objects is r(x) = 8x. The cost of manufacturing x objects is c(x) = 0.5x + 300. Write the profit function.
    A. 8.5x + 300 B. 8.5x - 300
    C. 7.5x + 300 D. 7.5x - 300
    Hint
  3.   Find the first three iterates, x1, x2, and x3, of the function
f(x) = 3x - 1 for an initial value x0=1.
    A. 2, 5, 14 B. -4, -13, -40
    C. 8, 23, 88 D. 5, 14, 41
    Hint
  4.   Write an equation in slope-intercept form for the line with a slope -3 and passes through the point (4, 2).
    A. y = -3x + 2 B. y = -3x + 14
    C. y = -3x + 4 D. y = -3x - 8
    Hint
  5.   Jane is opening a home-based business. She determined that she will need $4500 to buy a computer and supplies to start. She expects expenses for each following month to be $800. Write an equation that models the total expense y after x months.
    A. y = 4500x - 800 B. y = 800x - 4500
    C. y = 800x + 4500 D. y = 4500x + 800
    Hint
  6.   Write the standard form of the equation of the line that passes through the point (-1, 3) and is parallel to the graph of 2x - 7y + 1 = 0.
    A. 2x + 7y - 23 = 0 B. 2x + 7y + 23 = 0
    C. 2x - 7y - 23 = 0 D. 2x - 7y + 23 = 0
    Hint
  7.   Which is the graph of g(x) = |6 - |2x||?
    A. B.
    C. D.
    Hint
  8.   Solve the system of equations x = 4 and 3x - 4y = 12 by graphing.
    A. B.
    C. D.
    Hint
  9.   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 = 1, y = -3 D. x = -3, y = -1
    Hint
  10.   Find the value of .
    A. -28 B. 28
    C. 24 D. -24
    Hint
  11.   Which of the following shows the system of equations using a matrix equation?
   
    A. B.
    C. D.
    Hint
  12.   What type of relationship does the scatter plot suggest?
   
    A. no correlation
    B. a linear relationship with a positive correlation
    C. no linear relationship
    D. a linear relationship with a negative correlation
    Hint
  13.   Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test.
    A. 98.5 B. 72.5
    C. 93.25 D. 88.75
    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. greatest integer function B. piecewise function
    C. step function D. absolute value function
    Hint
  15.   Solve the system of three equations by elimination:

5x + 2y - 3z = 10
2x - 2y + 4z = 6
x - y + 2z = 3
    A. infinite solutions B. no solution
    C. (3, 4, 2) D. (2, -5, 3)
    Hint
  16.   The image of after Rot180 · Ry-axis is the same as which other reflection, if the vertices are A(1,1), B(2,6), C(6,4)?
    A. reflection over the y-axis B. none of these
    C. reflection over the x-axis D. reflection over the line y = x
    Hint
  17.   Set up a matrix equation for this chemistry problem. How many liters of 0.25 solution and 0.40 solution should be combined to make 10 liters of 0.35 solution?
    A. B.
    C. D.
    Hint
  18.   Solve this problem using matrix equations.How many liters of 0.25 solution and 0.40 solution should be combined to make 10 liters of 0.35 solution?
    A. 6.66 L of the 0.25 solution and 3.33 L of the 0.40 solution.
    B. 2.5 L of the 0.25 solution and 7.5 L of the 0.40 solution.
    C. 4.5 L of the 0.25 solution and 5.5 L of the 0.40 solution.
    D. 3.33 L of the 0.25 solution and 6.66 L of the 0.40 solution.
    Hint
  19.   Solve the system of inequalities by graphing.
2x + y 3
2x + y -2
y 4
x < 1
    A. B.
    C. D.
    Hint
  20.   Sam has $10,000 to deposit in two different savings accounts. He wants at least $3,000 in the account with 3% interest. He wants no less than $5,000 in the account with 7% interest.Graph this system of inequalities.
    A. B.
    C. D.
    Hint

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