florencemarti7727 florencemarti7727

04-06-2019
Mathematics

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The fuction a (n) = 3n-7 represents the value of the nth term in a sequence. What is the sum of the 1st and 5th terms of the sequence

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sqdancefan sqdancefan

16-06-2019

Answer:

1st term: -4
5th term: 8

Step-by-step explanation:

Put the appropriate values of n in the formula and do the arithmetic.

a(1) = 3·1 -7 = -4

a(5) = 3·5 -7 = 8

The 1st and 5th terms are -4 and 8.

_____

The first few terms of the sequence are ...

-4, -1, 2, 5, 8, 11, 14, ...

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