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6-5.

Given the sequence 7, 11, 15, 19, … Homework Help ✎

  1. What kind of sequence is it?

    How do you get from one term to the next?
    By adding or by multiplying?

  2. Define the sequence explicitly.

    See the online help for problem 5-67. Remember that t(n) = mn + t(0).

  3. Is 109 a term of the sequence? If so, which term is it?

  • Let t(n) = 109 in the equation you wrote for part (b).
    Solve for n. Remember that n is the term number.

  • n = 26.5, so no, 109 is not a term in the sequence.