Ask Question
Today, 02:53

Given the functions f (n) = 11 and g (n) = (three fourths) n - 1, combine them to create a geometric sequence, an, and solve for the 9th term.

an = (11 • three fourths) n - 1; a9 ≈ 24.301

an = 11 (three fourths) n - 1; a9 ≈ 1.101

an = 11 + (three fourths) n - 1; a9 ≈ 11.100

an = 11 - (three fourths) n - 1; a9 ≈ 9.900

+2
Answers (1)
  1. Today, 03:10
    0
    We are given two functions:

    f (n) = 11

    g (n) = (3/4) ^ (n-1)

    I have rewritten the functions to their correct form. Notice that the term (n - 1) is the exponent of 3/4.

    We are asked to combine the two functions to model a geometric sequence and solve for the 9th term.

    The general formula for a geometric sequence is

    an = a1 r^ (n - 1)

    From the given functions, we can set

    f (n) = a1 = 11

    and

    g (n) = r^ (n - 1) = (3/4) ^ (n - 1)

    Substituting to the general formula of a geometric sequence, the result is

    an = 11 (3/4) ^ (n - 1)

    Solving for the 9th term

    a9 = 11 (3/4) ^ (9 - 1)

    a9 = 1.101

    The answer is the second option.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Given the functions f (n) = 11 and g (n) = (three fourths) n - 1, combine them to create a geometric sequence, an, and solve for the 9th ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers