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Home > A2C > Chapter Ch7 > Lesson 7.2.2 > Problem 7-119

7-119.

Eniki has a sequence of numbers given by the formula .

  1. What are the first three terms of Eniki's sequence?

    Substitute , , into the formula.

  2. Chelita thinks the number is a term in Eniki's sequence. Is she correct? Justify your answer by either giving the term number or explaining why it is not in the sequence.

    Let and solve for . Be sure to divide both sides of the equation by before taking the log of both sides.

    What kinds of numbers will tell you if it is in the sequence?

  3. Elisa thinks the number is a term in Eniki's sequence. Is she correct? Explain.

    See part (b).