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71. Factor the expression: x^2 + 7x + 10.
a) (x + 2)(x + 5)
b) (x - 2)(x - 5)
c) (x + 2)(x - 5)
d) (x - 2)(x + 5)
Answer: a) (x + 2)(x + 5)

72. Solve the system of equations:
5x + 2y = 14
3x - 4y = -2
a) x = 2, y = 3
b) x = 3, y = 2
c) x = -2, y = 3
d) x = -3, y = 2
Answer: a) x = 2, y = 3

73. What is the y-intercept of the line with equation y = -3x + 5?
a) 3
b) -3
c) 5
d) -5
Answer: c) 5

74. Simplify: (2x^2)(3x^3)(-4x^4).
a) -24x^9
b) -24x^8
c) -24x^7
d) 24x^9
Answer: a) -24x^9

75. Solve the inequality: 3 - 4x < 5x + 2.
a) x > 1/3
b) x > 7/12
c) x < 1/3
d) x < 7/12
Answer: a) x > 1/3

76. Factor the expression: x^2 - 2x - 3.
a) (x - 3)(x + 1)
b) (x + 3)(x - 1)
c) (x - 3)(x - 1)
d) (x + 3)(x + 1)
Answer: a) (x - 3)(x + 1)

77. Solve the equation: 2x + 3 = 5x - 1.
a) x = 1
b) x = -1
c) x = 2
d) x = -2
Answer: b) x = -1

78. Simplify: (4x^2)(-2x^3)^3.
a) -64x^11
b) -64x^10
c) -64x^9
d) 64x^11
Answer: d) 64x^11

79. Solve the inequality: 3x + 4 > 2x + 5.
a) x > 1
b) x > -1
c) x < 1
d) x < -1
Answer: b) x > -1

80. Factor the expression: x^2 - 16.
a) (x - 4)(x + 4)
b) (x - 8)(x + 8)
c) (x - 2)(x + 2)
d) (x - 6)(x + 6)
Answer: a) (x - 4)(x + 4)