# MATH-120 Review Questions

1. Perform the indicated operation:

2. Write in the form

3. Find the exact distance between the points (3, -2) and (-1, 4).

4. Find the exact distance between the points (1,-6) and (-8,-4).

5. Find the solution set : 4x – (2x + 2) = 3(x – 2)

6. Find the solution set: 5x − (2x −10) = 35

7. Find the solution set:

8. Find the solution set:

9. The formula P = 2L + 2W gives the perimeter of a rectangle with length (L)
and width (W).

Solve for W .

10. The formula A= P + Prt gives the amount of money (A) you have when a
principal amount

(P) is invested at a rate r for t years. Solve the formula for t.

11. Find the solution set: (3x −1)^2 =16

12. Find the solution set: (4x −12)^2 = 81

13. Find the solution set, giving exact solutions: 4x^2 − 2x +1 = 0

14. Find the solution set, giving exact solutions: 3x^2 − 2x + 4 = 0

15. Find the solution set:

16. Find the solution set:

17. Find the solution set:

18. Find the solution set:

19. Solve the inequality, and then graph the solution :

20. Solve the

inequality, and then graph the solution: −8(x −1) ≥ 32

21. Solve the inequality. Write your solution using interval notation: | x + 3 |> 2

22. The length of a rectangular garden is 3 feet greater than the width. The
area is 108 square

feet. Find the length and width of the garden.

23. Solve the inequality. Write your solution using interval notation:

24. Solve the inequality. Write your solution using interval notation: | 2x +1|≤11

25. Solve the equation:

26. Solve the equation:

27. A ball is thrown upward from the ground. The height of
the ball in feet above ground after t

seconds is given by the formula h = −16t^2 + 48t . During which time interval
will the ball’s

height exceed 32 feet? What is the maximum height reached by the ball?

28. Solve the quadratic inequality and express the solution set in interval notation: x^2 − 4x + 3 > 0

29. Solve the rational inequality and express the solution set in interval notation:

30. Solve the rational inequality and express the solution set in interval notation:

31. A new car that was worth 24 thousand dollars in 2002 ( x = 2 ) will be
worth 13 thousand

dollars in 2006 ( x = 6). Assuming the depreciation is linear, find an equation
for the

depreciation y in terms of x years .

32. Write an equation for the line passing through the points (1,-1) and
(-1,4). Write your answer

in slope-intercept form.

33. Determine the slope and y -intercept of the graph of the equation11x + 2 y − 5 = 0 .

34. Determine the slope and y-intercept of the graph of the equation 9x − 8y = 72 .

35. Give the equation of the line in slope-intercept form.

36. A line contains the point (4, 2) and is perpendicular to the line whose
equation is y = 3x − 2 .

Give the equation for the line in slope-intercept form.

37. A solid line contains the point (3,2) and is perpendicular to the dotted
line whose equation is

y=2x. Give the equation of the solid line in slope-intercept form.

38. Complete the squares as needed to put the equation of the circle in
standard form. Give the

center and the radius of the circle.

39. Give the center and radius of the circle with equation:

40. Find f(-2) for the piecewise function:

41. Find f(-6) for the piecewise function:

42. Give the domain of the function,

43. Give the domain of the function. Write the domain using interval notation:

44. Find the domain and range of the function graphed. Write the domain and
range using

interval notation.

45. Identify is even, odd or neither.

46. Determine if is even, odd or neither.

47. Let Find and simplify the difference quotient

48. Let

Find and simplify the difference quotient

49. Here is the graph of y = f(x). On the same set of axes, graph g(x) = f(x
– 3) – 2, labeling

the coordinates of the corresponding 4 points

50. Consider the function f(x) whose graph appears in problem 49. Find the
domain of f, the

range of f, the interval(s) on which f is increasing, the intervals on which f
is decreasing,

and the intervals on which f is constant.

51. Consider the functions f (x) = x^2 + 2 and g(x) = 2x – 3. Find
. Simplify your

answer.

52. Consider the functions defined by f (x) = x^2 − 2 and g(x) = 3x − 4 .
Find
. Simplify

your answer.

53. Consider the function defined by f (x) = 4x^3 + 2 . Find the inverse of the function f .

54. Consider the function defined by

Find the inverse of f .

55. Here is the graph of a function f . Sketch the graph of f^{−1} on the same
axes.

56. Find the coordinates of the vertex for the parabola
defined by the function

f (x) = 4(x + 3)^2 − 7. Also find the axis of symmetry, find the x and y
intercepts, and

sketch a graph of the parabola.

57. Find the coordinates of the vertex for the parabola
defined by the function

f (x) = 4(x − 2)^2 − 9 . Also find the axis of symmetry, find the x and y
intercepts, and

sketch a graph of the parabola.

58. Find the x-intercepts of the function defined by g(x) = 2(x − 6)(x + 5).

59. Find the x-intercepts of the function defined by g(x) = 3(x + 5)(x − 4)

**Multiple Choice**

60. Describe the end behavior of the function defined by f
(x) = −5x^3 + ax^2 + bx + c , where a,

b, and c are real numbers .

A. falls to the left, falls to the right

B. falls to the left, rises to the right

C. rises to the left, rises to the right

D. rises to the left, falls to the right

**Multiple Choice**

61. Describe the end behavior of the function defined by

A. rises to the right, falls to the left

B. rises to the right, rises to the left

C. falls to the right, rises to the left

D. falls to the right, falls to the left

**Multiple Choice**

62. Consider the following graph:

This is most likely the graph of which of the following
functions? In the following

selections a, b, c, and d are real numbers .

63. List all possible rational zeros of the polynomial function

64. List all possible rational zeros of the polynomial function

65. Solve the polynomial equation
Use synthetic division to find one root,

and then use this root to find all of the roots of the equation.

66. Solve the polynomial equation
Use synthetic division to find one

root, then use this root to find all of the roots of the equation.

67. Find the quotient and the remainder when x^3 − 2x^2 − 6 is divided by x – 3.

68. The width of a rectangular box is three times the
height and the length is 8 inches more than

the height. If the volume is 120 cubic inches, find the dimensions of the box.

69. Given that i is a root of the equation find the solution set of the equation.

70. Given that i is a root of the following equation, find the solution set:

71. Find a third degree polynomial function f(x) with real
coefficients such that -2, 1, and 5 are

zeros and f(2) = -24.

72. Find a third degree polynomial function with real
coefficients such that 3 and i are zeros and

f(2) =10.

73. Solve the system of equations:

74. Solve the system of equations:

75. Solve the system of equations:

76. Find the quadratic function whose
graph goes through the points

(1,4), (3,20), and (-2,25).

77. Write the augmented matrix for the system of linear equations :

78. Write the augmented matrix for the system of linear equations:

79. Perform the matrix row operation and write the new matrix:

80. Perform each matrix row operation and write the new matrix:

**81. Answers**

Note: The graphical solutions were omitted here.

Prev | Next |