WELCOME TO THE OJK ALGEBRA II QUIZAROO PAGE
CURRENT CHAPTER IS 12, Exponential And Log Functions

Current quizaroo #  12

                        1)  Simplify: (4e-2x)-2 =

 a) 16e4x
 b) e4x/16
 c) 16/e4x
 d) 4e4x
 e) e4x/4
 
 
                        2) Solve the following equation: 

                                                                        a)  -1

                                                              b)  1
                                                              c)  2
                                                              d)  0
                                                              e) No solution
 

 
                        3)  Which is NOT a property of Exponential Functions?
 
 a) The domain is the set of all real numbers.
 b) The range is the set of positive real numbers.
 c) The y-intercept of the graph is at (0, 1)
 d) The y-axis is an asymptote of the graph.
 e) The function is one to one.
 
 
 
                        4)   Which log does not exist?
 
 a)  log 1
 b)  log (1/2)
 c)  log 3-1
 d)  log -1
 e)  log .01
 
                 
                        5)  Express in exponential form:  log3 81 = 4
 
 a) 43 = 81
 b) This log does not exist
 c) 4
 d) 81/4 = 3
 e) 34 = 81
 
                 
 

                        6)  Express in expanded form:  log (xy/ab2)
 
 a) log x + log y - log a + log b
 b) log x + log y - log a + 2 log b
 c) log x + log y - log a - 2 log b
 d) log x + log y - (log a + 2 log b)
 e) Both answers c and d
 
 
 
                        7) Express the following as a single log:  4log x + 2 log y - 3 log z
 
           a)  3log xy/z
 b)  log xy/z
 c)  log x4y2/z3
 d)  log x4y2 - log z3
 e)  log x4y2/logz3
 


                        8)  Find the inverse of the function:  y = ln (x - 5)
 
 a) y = 10x + 5
 b) y = 10 x + 5
 c) y = e5 + x
 d) y = ex + 5
 e) The inverse does not exist
 
                 
 
                        9)  Solve the equation  42x = 7 and round to three significant digits.
 
 a)  1.40
 b)  .702
 c)  2.81
 d)  .509
 e)  1.02
 
                  
 
                  10)  Use the change of base formula to find  log7 112.
                         Round to three significant digits.
 
 a) 1.20
 b) .293
 c) 2.42
 d) .412
 e) 3.18
 
 
 
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