67. 53 68. 1523 69. 1622 70. 62 71. 11210 72. 11221 73. What is the sign of the product of three negative factors? 74. What is the sign of the product of four negative factors? For Exercises 75 and 76, translate the English phrase to a mathematical expression. Then simplify. 75. The quotient of 45 and 15 76. The product of 4 and 19 77. Between 8:00 P.M. and midnight, the change in temperature was 12F. Find the average hourly change in temperature. 78. Suzie wrote four checks to a vendor, each for $160. If the original balance in her checking account was $550, what is her new balance? Section 2.5 For Exercises 79–88, simplify using the order of operations. 79. 50 316 22 80. 48 8 122 5 81. 28 172 3 112 82. 1422 8 162 83. 310 13224 1112 4 84. 39 17242 3 162 100 42 172 162 85. 86. 87. 5 233 12 524 88. 10 334 12 724 18 3122 42 8 89. Michael is 8 years older than his sister. Write an expression for Michael’s age if his sister is a years old. 90. At a movie theater, drinks are $3 each. Write an expression for the cost of n drinks. For Exercises 91–96, write each phrase as an algebraic expression. 91. The product of 5 and x 92. The difference of p and 12 93. Two more than the sum of a and b 94. The quotient of w and 4 95. 8 subtracted from y 96. Twice the sum of 5 and z For Exercises 97–104, evaluate the expression for the given values of the variable. 97. 3x 2y for x 5 and y 4 98. 51a 4b2 for a 3 and b 2 99. 21x y22 for x 6 and y 9 100. 3w2 2z for w 4 and z 9 101. for x 2 0x 0 102. for x 5 0x 0 103. for x 10 1x2 104. 1x2 for x 5 Chapter 2 Test Review Exercises 127
miller_prealgebra_2e_ch1_3
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