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61. Factor the expression: x^2 - 4.
a) (x - 2)(x + 2)
b) (x - 4)(x + 4)
c) (x - 3)(x + 3)
d) (x - 1)(x + 1)
Answer: a) (x - 2)(x + 2)
62. Solve the system of equations:
3x + 2y = 11
4x - y = 5
a) x = 3, y = 2
b) x = 2, y = 3
c) x = -3, y = 2
d) x = -2, y = 3
Answer: b) x = 2, y = 3
63. What is the slope of the line parallel to the equation 2x - 3y = 4?
a) 2/3
b) -2/3
c) 3/2
d) -3/2
Answer: a) 2/3
64. Find the x-intercept of the line with equation 4x - 3y = 12.
a) -4
b) 4
c) -3
d) 3
Answer: b) 4
65. Simplify: (5x^2)(-2x^3)^2.
a) -40x^10
b) -100x^10
c) -20x^10
d) 100x^10
Answer: b) -100x^10
66. Solve for x: 3x/4 + 2 = 5.
a) x = 4
b) x = 6
c) x = 8
d) x = 10
Answer: a) x = 4
67. Expand the expression: (x + 2)(x - 3)(x + 4).
a) x^3 + 3x^2 - 10x - 24
b) x^3 + 3x^2 - 10x + 24
c) x^3 - 3x^2 - 10x + 24
d) x^3 - 3x^2 - 10x - 24
Answer: d) x^3 - 3x^2 - 10x - 24
68. Solve the equation: 2(3x - 5) = 4x + 1.
a) x = 3/2
b) x = -3/2
c) x = 5/2
d) x = -5/2
Answer: a) x = 3/2
69. Simplify: (x^3)^4.
a) x^7
b) x^12
c) x^10
d) x^6
Answer: b) x^12
70. Solve the inequality: -2x + 5 > 3x - 1.
a) x > 1/2
b) x > 3/2
c) x < 1/2
d) x < 3/2
Answer: a) x > 1/2
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