Algebra 2 Online (Teaching Textbooks) Fourth Quarter Test 15

(L107) x 2 - 6x > 16 A. -2 < x < 8 B. x < -2 or x > 8 C. x < -4 or x > 4 D. x < -8 or x > 2 E. -4 < x < 4

A. -2 < x < 8

(L131) Eight people are competing in an art contest for 1st, 2nd, and 3rd place awards. How many different combinations of awards are there? A. 336 B. 247 C. 121 D. 144 E. None of the above

A. 336

(L14) -3[2 - 4(x + 1)] - 10 = 3x A. 4/9 B. 5/9 C. 4/5 D. 8/9 E. None of the above

A. 4/ 9

(L120) Find the indicated value of the dependent variable for the function f(t) = 1000(1 - 0.11)t : f (4). Round the answer to two decimal places (hundredths). A. 627.42 B. 729.24 C. 826.48 D. 948.47 E. None of the above

A. 627.42

(L134) Find the next three terms of the sequence: 3, 12, 48, 192, ... A. 768, 3,072, 12,288 B. 384, 768, 1,536 C. 576, 1,728, 5,184 D. 48, 12, 3 E. None of the above

A. 768, 3,072, 12,288

(L134) Select the direct formula for the sequence: 12, 19, 26, 33, ... A. an = 12 +7(n - 1) B. an = 12 * 7n-1 C. an = 12 * 5n+1 D. an = 12 + 5(n + 1) E. an = 12 - 7(n - 1)

A. an = 12 +7(n - 1)

(L134) A(n) _____ is a sequence in which each term comes from adding the same number to the previous term. A. arithmetic sequence B. special sequence C. geometric sequence D. trigonometric sequence E. None of the above

A. arithmetic sequence

(L126) The table below shows the heights (rounded to the nearest inch) of the members of a 6th Grade class. Find the mean, median, and mode of the data. Round your answers to one decimal place. A. mean: 57.7; median: 57.5; mode = 57 B. mean: 57.7; median: 57; mode = 57.7 C. mean: 57; median: 57.5; mode = 57.7 D. mean: 57.7; median: 57.7; mode = 57.7 E. None of the above

A. mean: 57.7; median: 57.5; mode = 57

(L69) The line crossing the points (3, 4) and (0, -2): A. y = 2x + (-2) B. y = 1/ 2 x + 2 C. y = 2x + 4 D. y = -2x + (-2) E. y =− 1 2 (x + 2)

A. y = 2x + (-2)

(L133) The first place prize for an art contest in $200. If Sri has a 30% probability of winning first place, what is the expected value of the art contest for Sri? A. $40 B. $60 C. $52 D. $45 E. None of the above

B. 60

(L21) 5/ x + 2 − 2/ 3x = 1/ x A. 1 B. 8 C. 9 D. 1/ 2 E. None of the above

B. 8

(L131) The office supply store is having a grab-bag sale, in which customers can fill a bag with any 5 items from the sale shelf for one low price. There are 12 different items on the sale shelf. How many different grab-bag combinations are possible? A. 865 B. 806 C. 792 D. 686 E. None of the above

C. 792

(L136) A - B A. [ 3 10 8 −4 0 −6] B. [ −10 21 −20 0 −1 5 ] C. [ 7 −4 −12 −4 2 4 ] D. [ −7 4 12 4 −2 5 ] E. [ 10 −21 20 0 1 −5]

C. [ 7 −4 −12 −4 2 4 ]

(L114) |−x−8|=5 A. 12, -12 B. 3, -3 C. 12, 4 D. -13, 3 E. None of the above

D. -13, 3

(L134) Find the 100th term of the sequence: -10, -15, -20, -25, ... A. -255 B. -750 C. -625 D. -525 E. None of the above

D. -525

(L52) (-2i 5 )3 A. 8 B. -8 C. 8i D. -8i E. -6i

D. -8i

(L132) A die is rolled and a coin is tossed at the same time. What is the probability of rolling a 2 and the coin landing on tails? A. 5/ 24 B. 1/ 12 C. 2/ 12 D. 1/ 6 E. None of the above

D. 1/ 6

(L96) Paul is creating a new painting for a section of the school's hallway. If the length of the painting is 20 feet more than its width, and its area is 96 square feet, what is the width of the painting? A. 20 feet B. 8 feet C. 16 feet D. 4 feet E. None of the above

D. 4 feet

(L130) What is the probability of rolling two dice and getting 8 (by adding the numbers on the two dice)? A. 5/ 12 B. 7/ 12 C. 1/ 36 D. 5/ 36 E. None of the above

D. 5/ 36

. (L136) cB A. [ −10 21 −20 0 −1 5 ] B. [ −3 6 9 −1 −2 −6] C. [ −2 7 10 0 −1 −5 ] D. [ 2 −7 −10 0 1 5 ] E. [ −5 −3 2 4 −1 1 ]

D. [ 2 −7 −10 0 1 5 ]

(L104) Which of the following represents the equation x + b2/ 9 = y after it has been solved for b? A. b = ±√ x + y/ 3 B. b =±√xy−9 C. b =±3√ y−x D. b =±x√ y−9 E. b = 3/ ±√ y−x

D. b =±x√ y−9

(L129) If when one variable goes up, the other variable tends to go up (roughly), the variables are _____. A. inversely correlated B. indirectly correlated C. negatively correlated D. positively correlated E. None of the above

D. positively correlated

(L52) (-4 + 6i)(8 - 2i) A. -44 + 56i B. -32 + (-12i) C. -44 + 40i D. -20 + (-40i) E. -20 + 56i

E. -20 + 56i

(L135) 5−3i/ 2 + i A. 5/ 2 + (− 3/ 2 i) B. 7/ 5 + (− 11/ 5 i) C. 13/ 5 + 11/ 5 i D. 34/ 7+11i E. 10/ 3 + i

E. 10/ 3 + i

(L104) In the equation f = a 2−4bc/ 3b , find the value of f when a = -4, b = 1, and c = -2. A. 15 B. 8 C. 3 D. 4 E. None of the above

E. None of the above