Write an expression for the general or nth term, an, for the geometric sequence.1, -3, 9, -27, . . .
A. an = 1 ? (-3)n
B. an = 1 ? (-3)n-1
C. an = -1 ? 3n
D. an = 1 ? 3n-1
Answer: B
Mathematics
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A. True B. False
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A. {7.09} B. {1.92} C. {12.82} D. {0.85}
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Graph on a number line.x ? 4
A. 
B. 
C. 
D. 
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Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
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