Find the nth term of the geometric sequence.5, -15, 45, -135, 405
A. an = 5 ? (-3)n
B. an = a1 - 3n
C. an = 5 ? (-3)n-1
D. an = 5 ? (-3)n
Answer: C
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, using the indicated point in the kth subinterval for ck.f(x) = -2x2, [0, 4], midpoint
A. 
B. 
C. 
D. 
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