Find the sum of the first n terms of the geometric sequence for the values of a1 and r.n = 4, a1 = 168, r = 3.4
A. 6603.072
B. 2681.28
C. 6553.66
D. 9284.352
Answer: D
Mathematics
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Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.(-2x2y)4
A. 16x6y4 B. -8x2y4 C. 16x8y4 D. -8x2y
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Match the shaded region with the set operation.A ? B
A. 
B. 
C. 
D. 
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Find the equation of the curve on which point P lies. The difference of the distances between P (x, y) and the points (-3, 3) and (9, 3) is 4. ?
A. 
B. 
C. 
D. 
E. none of these
Mathematics