Section 2.1: Exercises 92 and 94

Use the appropriate property of equality to solve each equation.

92. 7r/12 = -14

94. 1/3s + 7/9 = 4/3s

Section 2.2 Exercise 78, 86, and 90

78. v _ 4(4 _ v)__2(2v _ 1)

86 9 – 2m/7 = 19

90. 3(x _ 0.87) _ 2x _ 4.98

Section 2.3: 14, 22, 32, 54, and 68

14. x/2 – x/3 = 5

22. 1/15k + 5= 1/6k – 10

Solve each equation by first eliminating the decimal numbers.

32. 0.5b _ 3.4 _ 0.2b _ 12.4

54. - 6x + 3 = -7 - 5x

Identify each as a conditional equation,

an inconsistent equation, or an identity.

68. 3 - 3(5 - x) = 0

Section 2.4: 32, 54, 72, and 82

Solve each equation for x.

32. x - a = -x + a + 4b

Solve each equation for y.

54. Y + ½ = -1/3 (x + ½)

Fill in the tables using the given formulas.

72. S = n(n + 1)(2n + 1)

6

N S

1 ?

2 ?

3 ?

4 ?

5 ?

82. Finding MSRP. What was the MSRP for a Hummer H1

that sold for $107,272 after an 8% discount?

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