Write a formula for the general term (the nth term) of the geometric sequence.8, 24, 72, 216, 648, . . .

A. an = 8(3)n
B. an = 8(3n)
C. an = a1 + 3n
D. an = 8(3)n - 1


Answer: D

Mathematics

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A. y = - 
B. y = -  - 1
C. y = -  + 1
D. y = 

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Evaluate the expression.(9 + (-2))[7 + (4 + 8)]

A. 26 B. 89 C. 22 D. 133

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Factor completely. If a polynomial cannot be factored, say it is prime.z2 - 16

A. (x - 4)2 B. (z + 4)(z - 4) C. (x + 4)2 D. prime

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