Need help with Algebra
Page 17 & 18
10. 7 ?
-- = --
2 8
18. 5 ?
-- = ---
7 98
30. 34
102
31. 70
--
102
40. 5 12
-- . -
8 35
54. 2 10
-- -:- --
3 21
68. 3 1
-- + --
4 6
70. 3 1
-- - --
16 20
101 Stock Prices. On Monday, GM stock opened at 54 ¾ per share and closed up 3/16, On Tuesday it closed down 1/8 On Wednesday it gained 5/16. On Thursday I fell ¼. On Friday there was no change. What was the closing price on Friday? What was the percent change for the week?
Page 24
53. 7.3 - (-2)
54. -5.1 - 0.15
64. - 19 - 13
67. 13 + (-20)
80. - 7.08 - (- 9 )
93. Overdrawn. Willard opens his checking account with a deposit of $ 97.86. He then wrote checks and had other charges as shown in his account register.
Deposit $ 97.86
Wal-Mart 27.89
Kmart 42.32
ATM cash 25.00
Service charge 3.50
Check printing 8.00
109. Perimeter of a corral. The perimeter of a rectangular corral that has width x feet
And length x + 40 feet is 2(x) + 2 (x 40). Simplify the expression for the
Perimeter. Find the perimeter if x = 30 feet.
Page 35.
28. ( - 8 )4
41. ( - 6 )3
52. -7/2
66. - 18 - 9/2 -:- 3/3
84. 3/2 - 2.4
-------------
- 30 + 2. 4/2
125. Population of the United States. In 1998 the population of the United States was 270.1 million (U. S. Census Bureau, www.census.gov) If the population continues to grow at an annual rate of 0.86%, Then the population in the year 2010 will be 270.1 (1.00860)/12 MILLION. Find the predicted population in 2010 to the nearest tenth on a million people.
Page 57 & 58
28. 2b - ( -5b)
36. 3r2 +4r2
37. - 4x + 2x2
48. (- 5t ) ( - 2t )
81. 3a - 7 - ( 5a - 6 )
109. Perimeter of a corral. The perimeter of a rectangular corral that has width x feet
And length x + 40 feet is 2(x) + 2 (x 40). Simplify the expression for the
Perimeter. Find the perimeter if x = 30 feet.
Page 62 & 63
8. true or false ? Zero is not a rational number.
13 Every integer greater than - 1 is a whole number.
38 2 1
- -- + --
3 4
62. 3 - 7 - 4 - 9
64. 3/2 - 7 + 5/2
75. a2 + 2ab + b2
149. Brenda and nicki sell memberships in an automobile club over the telephone. Brenda sells one membership every 0.125 hour, and Nicki sells one membership every 0.1 hour. At what rate (in memberships per hour are the memberships being sold when both are working?
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