Choose the answer that best applies

1. (4x^3y/10x^2)(20x3y/y^3) =

   1.   ?    8x^4/y
   2.   ?    x^4/50y
   3.   ?    80x^4/y
   4.   ?    none of the above

2. (4)(4)^5 =

   1.   ?    16^5
   2.   ?    4^6
   3.   ?    16^6

3. Solve each linear system.
   3x - 4y = 2
   -x + 3y = 1
   

   1.   ?    (1,2)
   2.   ?    (2,1)
   3.   ?    (2,2)
   4.   ?    none of the above

4. How can $12,600 be split between two investments
   if one pays 6% annually and the other 8% annually so the amounts of interest from the two investments are equal?
   

   1.   ?    $7200 , $5400
   2.   ?    $3600 , $9000
   3.   ?    $7000 , $5600
   4.   ?    none of the above

5. Simplify ( 5i + 3 ) - ( 4 - 4i ) =
   

   1.   ?    9i - 1
   2.   ?    i - 1
   3.   ?    9-i-1

6. Simplify ( 5i + 3 )( 4 - 4i ) =
   

   1.   ?    20i + 20
   2.   ?    32 + 8i
   3.   ?    24i-9i
   4.   ?    none of the above

7. x^-3 = (1/27)

   1.   ?    9
   2.   ?    -3
   3.   ?    3
   4.   ?    none of the above

8. What is the slope of the line parallel to
   3x + y = -7 ?
   

   1.   ?    -3
   2.   ?    3
   3.   ?    4
   4.   ?    undefined