anonymous
  • anonymous
Given the functions f(n) = 25 and g(n) = 3(n − 1), combine them to create an arithmetic sequence, an, and solve for the 12th term.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@ivettef365
anonymous
  • anonymous
an = 25 − 3(n − 1); a12 = −11 an = 25 − 3(n − 1); a12 = −8 an = 25 + 3(n − 1); a12 = 58 an = 25 + 3(n − 1); a12 = 61
anonymous
  • anonymous
@ivettef365

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anonymous
  • anonymous
@satellite73
ivettef365
  • ivettef365
If I have to guess I would go for the 3rd option
anonymous
  • anonymous
thanksss :)
anonymous
  • anonymous
Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain.
anonymous
  • anonymous
1 Attachment
ivettef365
  • ivettef365
ok, on 4, you have that term 1 = 40, the other terms are greater so n>=40
ivettef365
  • ivettef365
now if you plug term 2, on option 1which is an = 40 + 7(n − 1) let see if it works, term 2 40 + 7(2-1) 40 + 7(1) 40 + 7 = 47 that is correct term 2 is 47
ivettef365
  • ivettef365
did you understand ?
anonymous
  • anonymous
ohh ok
anonymous
  • anonymous
So the full answer would then be an = 40 + 7(n − 1) where n ≥ 1 (just took the test!). :) Points earned on this question: 2

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