1.   Express 0.0000421 in scientific notation.
    A. 4.21 × 10-4 B. 4.21 × 10-6
    C. 4.21 × 10-5 D. 4.21 × 10-9
    Hint

  2.   Use elimination to solve the system of equations.
-x + 2y = 18
x + 8y = -38
    A. B. (-22, -2)
    C. D. (-5, -1)
    Hint

  3.   Select the segment that has been bisected.
    A. B.
    C. D.
    Hint

  4.   What is the solution of the system of equations shown below?
   
    A. (0, -3) B. (1, -2)
    C. (0, 0) D. (3, 0)
    Hint

  5.   If a rocket is fired from the ground with an initial velocity of 75 meters per second, then the height of the rocket after t seconds is h = 75t - 4.9t2. Find the height of the rocket after 3 seconds.
    A. 130.4 meters B. 252.5 meters
    C. 180.9 meters D. 221.6 meters
    Hint

  6.   Express in simplest form.
    A. B.
    C. D.
    Hint

  7.   Find the equation that contains a decreasing linear relationship.
    A. y = 12+ 2x B. y = 4x – 3
    C. y = 10 + x D. y = 5 – 6x
    Hint

  8.   Which line is parallel to the line listed below?
    A. y = 2x - 5
    B.
    C.
    D.
    Hint

  9.   Which equation represents exponential growth?
    A. y = 250 × 4x B. y = 250 × 0.25x
    C. y = 250 · x D. y = 250 × 0.4c
    Hint

  10.   Which equation represents exponential decay?
    A. y = 63 × 4.4x B. y = 63 × 0.4x
    C. y = 63 × 4x D. y = · 63x
    Hint

  11.   Find the table that does not represent an exponential equation.
    A.
    B.
    C.
    D.
    Hint

  12.   Find a solution to the equation using backtracking.
    A. c = 8 B. c = –14
    C. c = –1 D. c = 2
    Hint

  13.   Choose the correct graph of y = 12x – 3x
    A.
    B.
    C.
    D.
    Hint

  14.   Select the figure that is a reflection.
    A. B.
    C. D.
    Hint

  15.   Scale the figure below by.
   
    A. B.
    C. D.
    Hint

  16.   Use the projection method to scale this polygon by a factor of .
   
    A. B.
    C. D.
    Hint

  17.   Solve the equation by backtracking.
    A. f = –28 B. f = –24
    C. f = 16 D. f = –21
    Hint

  18.   Find the quadratic equation with 0 solutions.
    A. x2 – 2x – 3 = 0 B. x2 – 2x + 5 = 0
    C. x2 + 4x – 12 = 0 D. x2 – 12x + 36 = 0
    Hint

  19.   Find the domain of the function.y = –x + 3
    A. all real numbers B. all real numbers except –3
    C. all real numbers except 1 D. all real numbers except 3
    Hint

  20.   Suppose you spin two spinners, each numbered 1 to 4, and multiply the two outcomes. How many possible number pairs can you roll?
    A. 8 B. 4
    C. 10 D. 16
    Hint



Glencoe
The McGraw-Hill Companies