Solve the problem.An arithmetic sequence contains the terms a6 = -12 and a10 = -28. Find the first term and the general nth term.
A. a1 = 4; an = -4n + 8 for all n ? 1
B. a1 = 8; an = 4n + 12 for all n ? 1
C. a1 = 8; an = -4n + 12 for all n ? 1
D. a1 = 8; an = -4n + 8 for all n ? 1
Answer: C
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Factor completely. If the polynomial is prime, then state this as your answer.x2 - x - 72
A. (x + 1)(x - 72) B. prime C. (x + 8)(x - 9) D. (x + 9)(x - 8)
Evaluate.log6 
A. 2 B. 6 C. -2 D. -6
Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. ?
B. {(-4, 3, 5, -2)}
C. 
D. {(4, -3, -5, 2)}
Provide an appropriate response.Consider the sequence defined by an = -80n - 58. Is this sequence arithmetic, geometric, or neither?
A. Neither B. Geometric C. Arithmetic