Algebra 2 section of MathBitsNotebook.com Practice Test 2 - CCSS Algebra 2 Interactive Version - Multiple Choice Directions:  Choose the best answer.  Answer ALL questions (or only a few at a time), then use the BUTTON at the BOTTOM of the page to check your answers.  If you are told that an answer is incorrect, go back and redo that question and CHECK ANSWERS again.   You may CHECK ANSWERS at any time. You may use your graphing calculator when working on these problems.
 1 Choose the correct simplification of: 31 - 12i
  23 - 12i
 39 + 4i
 11

2.  Find the solution(s) to the equation: x2 - 3x + 5 = 2x + 10    3.
Find the value of sin θ, if θ lies in the third quadrant and tan θ = .    4.  Solve for x: x = 6 and x = -3   x = +3 and x = -6   x = 6  x = -3

5.
Which choice is equivalent to: ?    6.
Identify the focus and directrix of the quadratic  (x - 2)2 = 8(y - 3).
   focus (2,3); directrix y = 1   focus (2,1); directrix y = 5   focus (2,5); directrix y = 1   focus (2,5); directrix y = 0

7.
Which of the following is NOT equivalent to ?    8.  What is the quotient?  x + 6  9.
Find the sum of the first 4 terms of a geometric sequence where a1 = π + 3 and the common ratio is 4.
 4π + 12
 64π + 192
 85π + 255
 256π + 768

10.  If 5x = ln(e16), what is the value of x ?
  1.5  2.1  3.2  16

11.  A sampling distribution of sample proportions for a specific study has a mean, p, of 0.32 and a sample size of 50. The standard deviation (standard error) of this sampling distribution is 0.066. What is the margin of error for a 95% confidence level?
  0.066   0.084  0.132   0.164

12.  If the probability that an event will occur is , what is the probability that the event will NOT occur?    13.
In relation to the functions shown below, choose the best answer.    g (x) is an even function  h (x) is an odd function
 f (x) is an odd function  Both g (x) and j (x) are odd functions

14.  If , which choice represents the inverse function, p-1(x) ?    15.  Given the equation x (x + 10) = 5 (2 - x), what is the nature of the roots?
   two rational, unequal roots  two irrational roots   two rational, equal roots  two imaginary roots

16.  Given f (x) = | x - 4 | + 2 and g(x) = 3x - 4, find the x-value(s) that statisfy f (x) = g(x).
   1   ½, 2½   -1  2½

17.
Find the solution set to the equation
2x3 + 3x2 - 32x - 48 = 0.    18.  Using the triangle at the right, find the value of              15 sin(A) + 10 sec(B) - 8 cot(A). 12
 14
 18.5
 32

19.
Which of the following represents the sum of a geometric sequence?    20.  Jackie's parents invested money at an interest rate of 6% compounded continuously, to save toward Jackie's college education. How much money did the parents invest when Jackie started first grade to accumulate \$20,000 after 12 years? Calculations have been rounded to the nearest penny.
  \$6,846.60  \$9,735.05  \$10,976.23  \$13,966.05

21.
What is the domain of the function ?    22.  A central angle on the unit circle is 80º. Find the length of the arc subtended by this angle.    23.  Which of the following expressions is equivalent to ?    24.  After hearing complaints from the teachers, a principal wishes to conduct a survey to determine if he needs to take action regarding excessive cell phone usage in the school hallways between classes. Which of the following is the best method for the principal to gather reliable data pertaining to the amount of cell phone usage?
   Select every 10th student from the hallways and ask his or her opinion on this issue.   Distribute a student questionnaire on this issue to each student seen in the hallways.   Ask each teacher to find the level of student cell phone usage in the hallways.   Position observers in the hallways to count the number of students using cell phones.