63-77 odd

2:52 Sat, Sep 27 [, L X 88 Use the distributive property to write each sum as a product. See Examples 13 and 14. 63. 4 . 1 + 4 . y 64. 14 . z + 14 . 5 65. 11x + 1ly 66. 9a + 9b 67. (-1) . 5 + (-1) . x 68. (-3 ) a + ( - 3 ) y 69. 30a + 30b 70. 25x + 25y Objectives A C Mixed Practice Name the property illustrated by each true statement. See Examples 15 through 21. 71. 3. 5 = 5. 3 72. 4(3 + 8) = 4 . 3 + 4.8 73. 2 + ( x + 5 ) = (2 + x ) + 5 74. 9 . (x . 7 ) = (9 . x) . 7 75. (x + 9) + 3 = (9+ x)+ 3 0 76. 1 .9 =9 77. (4 . y) . 9 = 4. (y . 9) 78. - 4 . (8 . 3) = (8.3) . (-4) 676 Chapter 9 | Equations, Inequalities, and Problem Solving 0 79. 0 + 6 =6 80. (a + 9) +6 = a + (9+6) 81. -4(y + 7 ) = -4 . y + (-4) . 7 82. (11 + r) + 8 = (r+ 11) + 8 0 83. 6 . 4 = 1 84. r + 0 =r 85. -6 . 1 = -6 86. - 3 ( - 3) - 1 Review Evaluate each expression for the given values. See Section 2.5. 87. If x = -1 and y = 3, find y - x2. 88. If g = 0 and h = -4, find gh - h. 89. If a = 2 and b = -5, find a - b2. 90. If x = -3, find x3 - x2 + 4. 91. If y = -5 and z = 0, find yz - y?. 92. If x = -2, find x3 - x2 - x. Concept Extensions Fill in the table with the opposite (additive inverse), the reciprocal (multiplicative inverse), or the expression. Assume that the value of each expression is not 0. 93 94. 95. 96. 97. 98. Expression 8 4v Opposite 7x Reciprocal 1 2 x Decide whether each statement is true or false. See the second Concept Check in this section. 99. The opposite of -~ is 2 100. The reciprocal of - " is a is C III O