Use the partial sum formula to find the partial sum of the given arithmetic sequence.Find the sum of the first six terms of the arithmetic sequence: 1, 5, 9, . . . .
A. 15
B. 30
C. 132
D. 66
Answer: D
Mathematics
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Find the slope of the polar curve at the indicated point.r = 2 cos 3?, ? = 
A. - 
B. 
C. -
D. 
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Find the area enclosed by the given curves.y = x3, y = 4x
A. 8 B. 16 C. 4 D. 2
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Solve each of the following systems of equations. If the system is inconsistent or dependent, say so.x + y = 8x - y = 2
A. (5, 3) B. No solution C. (4, 4) D. (-5, 4)
Mathematics
Find all the factors of the number.84
A. 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 21, 28, 42, 84 B. 1, 2, 3, 4, 6, 7, 12, 14, 21, 42, 84 C. 1, 2, 3, 4, 7, 14, 21, 28, 42, 84 D. 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Mathematics