Uopeopldd - college algebra unit 8 review quiz PDF

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Home My courses MATH 1201 - AY2021-T5 Final Exam (Days 1 - 4) Review Quiz

Started on

Sunday, 15 August 2021, 9:11 PM

State Finished Completed on Time taken Marks

Sunday, 15 August 2021, 10:11 PM 59 mins 14 secs 18.00/20.00

Grade 90.00 out of 100.00

Question 1 Correct Mark 1.00 out of 1.00

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The x-intercept of y = 4x – 8 is? Select one: a. (0, -8) b. (4, -8) c. (0, 0) d. (2, 0)

Feedback Your answer is correct.

Question 2

Correct Mark 1.00 out of 1.00

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Solve the system: y = x2 – 5, y = 2x - 2 Select one: a. (3, -1) b. (-1, 3) c. (3, 4) and (-1, 2) d. (-1, -4) and (3, 4)

e. None of these Feedback Your answer is correct.

Question 3 Correct Mark 1.00 out of 1.00

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According the rational root theorem, how many possible rational roots are there to 2x 4 + 14x3 – 6x + 7 = 0? Select one: a. 2 b. 4 c. 6 d. 8

e. None Feedback Your answer is correct.

Question 4 Correct Mark 1.00 out of 1.00

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The remainder of x8 – 37x5 + 38x – 37 divided by x is: Select one: a. 37 b. 38 c. -38 d. -37

e. None of these Feedback Your answer is correct.

Question 5 Correct Mark 1.00 out of 1.00

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If f(x) = x2, what is f(x + h) – f(x)? Select one: a. h

b. 2xh + h2

c. 2xh d. 2x + h Feedback Your answer is correct.

Question 6 Incorrect Mark 0.00 out of 1.00

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What are the possible rational roots of f(x) = 5x 4 - 173x3 -16x2 -7x -15, according to the rational root theorem? “+-“ means “plus or minus”. Select one: a. {+-1, +- 5} b. {+- 1, +- 3, +- 5, +- 15} c. {+- 1, +- 5, +- 1/3, +- 5/3, +- 1/5, +- 1/15}

d. {+- 1/5, +- 3/5, +-1, +- 3, +- 5, +- 15} e. None of these Feedback Your answer is incorrect.

Question 7 Correct Mark 1.00 out of 1.00

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Question text

What is i103? Select one: a. 1 b. -1 c. i d. -i

e. None of these Feedback Your answer is correct.

Question 8 Correct Mark 1.00 out of 1.00

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Solve the system: y = e3x , and y = e2x-1 Select one: a. (0, 1) b. (1/5, e3/5) c. (-1, e-3)

d. No solution e. None of these Feedback Your answer is correct.

Question 9 Correct Mark 1.00 out of 1.00

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The zeroes of f(x) = x2 – 8x + 17 are? Select one: a. {8, 17} b. {4

i}

c. {-4

i}

d. {17

8i}

e. None of these Feedback Your answer is correct.

Question 10 Correct Mark 1.00 out of 1.00

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Solve the system: 2x + 3y = 7, 3x - 5y = 1 Select one: a. (2, 1)

b. (1, 2) c. (0, 0) d. There is no solution e. None of these Feedback

Your answer is correct.

Question 11 Correct Mark 1.00 out of 1.00

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What is the solution of 2x – y = 5, -8x + 4y = 2? Select one: a. (2, -1) b. (-1, 2) c. (0, -5) d. There is no solution

e. None of these Feedback Your answer is correct.

Question 12 Correct Mark 1.00 out of 1.00

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The graph of f(x) = x3 -6x2 + 4x +1 hits the x-axis how many times? Select one: a. 0 b. 1 c. 2

d. 3

Feedback Your answer is correct.

Question 13 Correct Mark 1.00 out of 1.00

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The solutions of x2 -8x + 17 = 0 are? Select one: a. 4 + i and 4 – i

b. -8 and 17 c. 4 and -4 d. √17 and -√17 e. No solutions Feedback Your answer is correct.

Question 14 Correct Mark 1.00 out of 1.00

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If A = 3 and B = 4 + i, A/B = ? Select one:

a. 3/4 b. 12/17 – (3/17)i

c. 12/5 + (3/5)i d. 12/17 + (3/17)i Feedback Your answer is correct.

Question 15 Correct Mark 1.00 out of 1.00

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What is f(x) = x8 - 1 divided by x - 1? Select one: a. x2 + 1 b. x2 – 1 c. x7 + x6 + x5 + x4 + x3 + x2 + x + 1

d. x6 + x5 + x4 + x3 + x2 + x + 1 e. x7 + x6 + x5 + x4 + x3 + x2 + x Feedback Your answer is correct.

Question 16 Incorrect Mark 0.00 out of 1.00

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Solve the system: y = x2 + 4x – 5, y = 0 Select one: a. (0, -5) and (1, 1) b. (4, 4) and (-5, -5)

c. (1, 0) and (-5, 0) d. No solution e. None of these Feedback Your answer is incorrect.

Question 17 Correct Mark 1.00 out of 1.00

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What is i73? Select one: a. 1 b. -1 c. i

d. -i e. None of these Feedback Your answer is correct.

Question 18 Correct Mark 1.00 out of 1.00

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Solve for x: e2x + 1 = 10. Choose the closest answer. Select one: a. 0.1 b. 0.3 c. 0.6

d. 0.9 e. None of these Feedback Your answer is correct.

Question 19 Correct Mark 1.00 out of 1.00

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If f(x) = 3x – 5, what is the inverse of f? Select one: a. -3x + 5 b. 5x – 3 c. x/3 + 5/3

d. x/3 – 5/3 e. None of these Feedback

Your answer is correct.

Question 20 Correct Mark 1.00 out of 1.00

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As x goes to infinity, the graph of f(x) = 5x4 - 173x3 -16x2 -7x -15 goes to (points in) what direction? Select one: a. ∞

b. -∞ c. 0 d. 1 e. 5 Feedback Your answer is correct....