Solve the system of equations using matrices. Use Gauss-Jordan elimination.
A. {(1, 8, 9)}
B. {(2, 8, -1)}
C. {(-1, 8, 2)}
D. {(1, 9, 8)}
Answer: A
Mathematics
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Identify the degree and leading coefficient of the polynomial.14x6 - 4x + 6
A. Coefficient: 14; Degree: 6 B. Coefficient: 6; Degree: 14 C. Coefficient: 14; Degree: 8 D. Coefficient: 14; Degree: 7
Mathematics
Solve.The profits (in millions) for a company for 8 years were as follows: 
Which of the following polynomials is the best model for this data?
A. P(x) = 0.03x3 - 0.3x2 + 1.3x + 0.17 B. P(x) = -0.03x4 - 0.3x2 + 1.3x + 0.17 C. P(x) = -0.08x3 + 7x2 + 1.3x - 0.18 D. P(x) = 0.05x2 - 0.8x + 6
Mathematics
Simplify. Assume that all variables represent positive real numbers.- 
A. -3
B. -9
C. 3
D. 7
Mathematics
Find the perimeter. Use 3.14 for ? when needed.
A. 90 cm B. 50 cm C. 410 cm D. 70 cm
Mathematics