SOLUTION: find the sum of ap 2+5+8+,...as far as the 18th terms

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Question 1076287: find the sum of ap 2+5+8+,...as far as the 18th terms
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
The 18th term:
2%2B%2818-1%29%2A3=2%2B3%2A17=53

The sum:
%2818%2F2%29%282%2B53%29
9%2A55
495