CHAPTER 1 Review Exercises^81
65. 66.
67. 68.
69. 70.
71. 72.
Write a numerical expression for each phrase, and simplify the expression.
73.19 added to the sum of and 12 74.13 more than the sum of and
75.The difference between and 76.Five less than the sum of 4 andFind the solution of each equation from the set.Solve each problem.
79.George Fagley found that his checkbook balance was so he deposited $50.00.
What is his new balance?
80.The low temperature in Yellowknife, in the Canadian Northwest Territories, one January
day was It rose 16° that day. What was the high temperature?
81.Reginald Fulwood owed a friend $28. He repaid $13, but then borrowed another $14.
What positive or negative amount represents his present financial status?
82.If the temperature drops 7° below its previous level of what is the new temperature?
83.Mark Sanchez of the New York Jets passed for a gain of 8 yd, was sacked for a loss of
12 yd, and then threw a 42 yd touchdown pass. What positive or negative number rep-
resents the total net yardage for the plays?
84.On Monday, August 31, 2009, the Dow Jones Industrial Average closed at 9496.28,
down 47.92 from the previous Friday. What was the closing value the previous Friday?
(Source: The Washington Post.)1.6 Perform each indicated operation.
85. 86. 87. 88.
89. 90. 91.
92. 93. 94.
95. 96. 97.
98. 99. 100.
Evaluate each expression if andWrite a numerical expression for each phrase, and simplify the expression.
105.Nine less than the product of and 5
106.Five-sixths of the sum of 12 and
107.The quotient of 12 and the sum of 8 and
108.The product of - 20 and 12, divided by the difference between 15 and - 15- 4
- 6
- 4
6 x- 4 z 5 x+y-z 5 x^2 z^213 x- 8 y 2x=-5,y=4, z=-3.1 0.6 22 + 1 0.8 22
1 - 1.2 22 - 1 - 0.56 2
102 - 52
82 + 32 - 1 - 22
51 - 22 - 3142
- 233 - 1 - 224 - 1
- 5132 - 1
8 - 41 - 22
- -33.9, 1 - 32
1
2
,
2
3
220
- 11
- 36
- 9
31 - 102 - 5
518 - 122 15 - 7218 - 32 21 - 62 - 1 - 421 - 32
- 1 - 4.8 21 - 2.1 2
4
3
a-3
8
1 - 1221 - 32 151 - 72 b- 3°,
- 26°F.
- $23.75,
x+ 1 - 22 =- 4 12 +x= 11