# Math

Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 5, 13, 21, 29, 37, 45

1)8n;800
2)8n-3;797
3)3n-8;292
4)5+8n;805

I think #4 is correct.
Thank you.

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1. an = d (n - 1) + c, where d is the common difference between consecutive terms, and c = a1.
an=8(n-1)+5. Get rid of the brackets and gather like terms then substitute n=100

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2. if n = 0, y = 5
differences are8
so
5 + 8 n
100th term when n = 99
5 + 8(99) = 800
they mean 101 st term
5 + 8(100) = 805

could also have said 5 + 8(n-1)

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3. I think she wants yall to too tell her the answer so she can check it-

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4. I Ain't telling her nun

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