The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.
A. {(13 + 12z, -6 - 4z, z)}
B. {(13 + 11z, -3 - 4z, z)}
C. ?
D. {(13 + 11z, -6 - 4z, z)}
Answer: B
Mathematics
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A. (1, ?)
B. (-19, ?)
C. (-?, -19)
D. (-?, 1)
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Graph the circle.x2 + y2 - 8x - 10y + 37 = 0
A. 
B. 
C. 
D. 
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Rewrite the fraction with the denominator indicated.Write 
with a denominator of 6.
A. 
B. 
C. 
D. 
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Translate using numbers and symbols.a number increased by five
A. 5n B. n × 5 C. n + 5 D. n - 5
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