Answers to College Algebra Study Guide Questions

(for testing out of MAT150/151)

  1.  
    2. a. 8d. 256
    b. e.
    c. f.

  2.  
    3. a. b. c.

  3.  
    4. a. d. 3x + 1,
    b. 6x+3he.
    c. 13

  4.  
    5. a. c. x<0 or x>16
    b. or d. x<3, excluding –2

  5.  
    6. a. d. all real numbers
    b. t>-1e.
    c. all real numbers excluding 3

  6.  
    1.  
      2. i. ii. –ln x - 2 ln y - ln z

    2.  
      3. i. logii.

    3.  
      4. i. ii. –1iii.

  7.  
    8. a. d. x = 0, 2
    b. e. x = -3, 1
    c. x = 5f.

  8.  
    9. a. d.
    b. e.
    c.

  9.  
    10. a. –2, -1, and 0f. $5667
    b. 14 cm, 21 cm, and 28 cmg. 20 dimes, 35 nickles
    c. Y = 108h. 24 hours
    d. 40 milesi. $361,152
    e.

  10.  


  11.   y = -6x – 9

  12.  

  13.   ,

  14.  
    15. a. c.
    b. d.

  15.  
    16. a. c.
    b. d.

  16.  

    2. Vertex:

    3. y is increasing on

  17.  

    2. & y = 3 therefore the solution is (19.09, 3)

  18.  cosine, cosecant, tangent

  19.  

  20.  

  21.   and

  22.  

  23.  

  24.