Find the nth term of the geometric sequence.-8, -16, -32, -64, -128
A. an = -8 ? 2n
B. an = a1 + 2n
C. an = -8 ? 2n
D. an = -8 ? 2n-1
Answer: D
Mathematics
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A. - 
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C. - 
D. -
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A. 3 B. -5 C. -3 D. 5
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Find the general solution of the differential equation, or the particular solution if an initial condition is given. xy' + 7y = x2; y(2) = 12
A. y = 
+ 
B. y = 
+ 
C. y = 
+ 
D. y = 
+ 
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