SOLUTION: Find the sum of the first 100 terms of the sequence 6, 8, 10, 12, 14,...

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Question 864084: Find the sum of the first 100 terms of the sequence
6, 8, 10, 12, 14,...
Answer by richwmiller(17219) About Me  (Show Source):
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S = ½(12 + (99)2)100
S=50*210=10500
Bonus
an = a + (n - 1)d
a100= 6 + (99)2
a100=204