For the given arithmetic series, what is Sn?a1 = 28, d = 1, and n = 31
A. 1333
B. 2666
C. 1361
D. 5332
Answer: A
Mathematics
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Solve the quadratic equation by factoring.3x(x + 3) = (2x + 2)(x + 3)
A. {-2} B. {-3, 2} C. {3, -2} D. {2}
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5
- 2
A. 55
B. -35
C. 35
D. -55
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Express the number in terms of i.-
A. 
B. 
i
C. -
i
D. -26i
Mathematics
If a tree casts a shadow of 11 ft at the same time that a 6-ft person casts a shadow of 2 ft, find the height of the tree (to the nearest foot). ?
A. 33 ft B. 6 ft C. 2 ft D. 17 ft E. 11 ft
Mathematics