Chapter 9 - XYZ Custom Plus

9.1 Problem Set
519
Find the value of each of the following expressions when x 5 3. You may substitute 3 for x in each expression the way it is
written, or you may simplify each expression first and then substitute 3 for x.
61. 3x 1 5x 1 4
62. 6x 1 8x 1 7
63. 9x 1 x 1 3 1 7
64. 5x 1 3x 1 2 1 4
65. 4x 1 3 1 2x 1 5
66. 7x 1 6 1 2x 1 9
67. 3x 2 8 1 2x 2 3
68. 7x 2 2 1 4x 2 1
Find the value of each of 12x 2 3 for each of the following values of x.
69. } 1 2
70. } 1 3
71. } 1 4
72. } 1 6
73. } 3 2
74. } 2 3
75. } 3 4
76. } 5 6
Use the distributive property to write two equivalent expressions for the area of each figure.
77. 78.
6
7
x 4
x 5
Write an expression for the perimeter of each figure.
79. 80.
3x 2
Square
x 1
Rectangle 2x 1
81. 3x 1
82.
Parallelogram
2x 3
4x 1 4x 1
Triangle
5x 4