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The pattern of numbers below is an arithmetic sequence: [tex]14, 24, 34, 44, 54, \ldots[/tex]

Which statement describes the recursive function used to generate the sequence?

A. The common difference is 1, so the function is [tex]f(n+1) = f(n) + 1[/tex] where [tex]f(1) = 14[/tex].

B. The common difference is 4, so the function is [tex]f(n+1) = f(n) + 4[/tex] where [tex]f(1) = 10[/tex].

C. The common difference is 10, so the function is [tex]f(n+1) = f(n) + 10[/tex] where [tex]f(1) = 14[/tex].

D. The common difference is 14, so the function is [tex]f(n+1) = f(n) + 14[/tex] where [tex]f(1) = 10[/tex].

Answer :

We start with the arithmetic sequence:

[tex]$$
14, \; 24, \; 34, \; 44, \; 54, \; \ldots
$$[/tex]

An arithmetic sequence is defined by a constant difference between consecutive terms. To find the common difference, subtract the first term from the second term:

[tex]$$
d = 24 - 14 = 10
$$[/tex]

To confirm, we can check the next difference:

[tex]$$
34 - 24 = 10
$$[/tex]

Since every consecutive pair has the same difference, the common difference is indeed [tex]$10$[/tex].

The recursive function for an arithmetic sequence is given by:

[tex]$$
f(n+1) = f(n) + d
$$[/tex]

Substituting the common difference [tex]$d=10$[/tex], we have:

[tex]$$
f(n+1) = f(n) + 10
$$[/tex]

The first term is provided as [tex]$f(1)=14$[/tex].

Thus, the recursive function that generates the sequence is:

[tex]$$
f(n+1) = f(n) + 10 \quad \text{with} \quad f(1)=14.
$$[/tex]

This corresponds to option 3.

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