Full Self-Quiz Unit 4 - Selection of my best coursework PDF

Preview

Summary

Selection of my best coursework...

Description

Full Self-Quiz Unit 4 College Algebra University of the people Question 1 If f(x) = 3x – 5, what is the inverse of f? a. -3x + 5 b. 5x – 3 c. x/3 + 5/3 d. x/3 – 5/3 e. None of these Question 2 Let f(x) = – x 2 – 4, x < 0. What is f -1 ? a. –√(–x – 4) b. –√(–x – 4), x < – 4 c. √(x + 4) d. –√(–x – 4), x > – 4 e. None of these Question 3 If f(x) = 2x + 3 and g(x) = x – 5, what is g ○ f? a. 2x + 1 b. 2x + 2 c. 2x - 1 d. 2x - 2 e. None of these Question 4 For f(x) = √(x + 5) + 2, what is the domain of f -1 ? a. (-∞, ∞) b. (0, ∞) c. (-∞, 0) d. [2, ∞) e. None of these Question 5 Let f(x) = x 2 – 4, x < 0. What is f -1 ? a. -√(x – 4) b. -√(x – 4), x > 4 c. -√(x + 4) d. -√(x + 4), x >-4 e. None of these Question 6 If f(x) = 1 / (3x – 5), what is the inverse of f? a. 1 / (3x + 5) b. 1 / (3x – 5)

c. (1/3).(1/x – 5) d. (1/3).(1/x + 5) e. None of these Question 7 If f(x) = 2x + 3 and g(x) = x – 5, what is f○g? a. 2x - 5 b. 2x – 7 c. 2x – 10 d. 2x - 15 e. None of these Question 8 If f(x) = 2x + 3, and g(x) = x 2 + x, what is f ○ g? a. 4x 2 + 14x + 12 b. 4x 2 + 12x + 9 c. x 2 + 3x + 3 d. 2x 2 + 2x + 3 e. None of these Question 9 If f(x) = 2x + 3, and g(x) = x 2 + x, what is g ○ f? a. 4x 2 + 14x + 12 b. 4x 2 + 12x + 9 c. x 2 + 3x + 3 d. 2x 2 +2x +3 e. None of these Question 10 For f(x) = –√(x – 5) – 2, what is the domain of f -1 ? a. (–∞, 2] b. [2, ∞) c. (–∞, –2] d. [–2, ∞) e. None of these...