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Please help! Consider the sequence {20, 17, 14, 11, 8, 5, 2...}.

Please help! Consider the sequence {20, 17, 14, 11, 8, 5, 2...}.-example-1
User Esquare
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5 votes

Answer:

c.) 38

Explanation:


\sum\limits_(n=3)^6 a_n means "summation of the all the elements starting from the 3rd element to the 6th element".

The 3rd element in the series is 14, and the 6th element is 5; we have to add these and all the elements between them together.


\sum\limits_(n=3)^6 a_n = 14 + 11 + 8 + 5

= 38

User Ricco
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