Evaluate the expressions.
Given x = - 1, y = -2, and z = 2
1.) 9x² - 6y - 8z
A. 5
B. -13
C. -19
D. 10
2.) x + 2y - z
A. -5
B. -9
C. -7
D. 1
3.) 2x - y + 3z
A. 0
B. -2
C. 4
D. 6
4.) - x - y - z
A. 1
B. -1
C. 3
D. -3
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Evaluate the expressions.
Given x = - 1, y = -2, and z = 2
1.) 9x² - 6y - 8z
A. 5
B. -13
C. -19
D. 10
2.) x + 2y - z
A. -5
B. -9
C. -7
D. 1
3.) 2x - y + 3z
A. 0
B. -2
C. 4
D. 6
4.) - x - y - z
A. 1
B. -1
C. 3
D. -3
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2.) -1 +2(-2) -2 = -7 (C.)
3.) 2(-1) -(-2) +3(2) = 6 (D.)
4.) -1 -(-2) -2 = -1 (B.)