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02-09-2018
Mathematics

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nth term to 4 1 -2 -5 -8

Respuesta :

02-09-2018

4

4 - 3 = 1

1 - 3 = -2

-2 - 3 = -5

-5 - 3 = -8

It's the arithmetic sequence.

[tex]a_n=a_1+(n-1)d[/tex]

[tex]a_1=4,\ d=-3[/tex]

substitute

[tex]a_n=4+(n-1)(-3)=4-3n+3=-3n+7[/tex]

Answer: [tex]a_n=-3n+7[/tex]

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