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21. A sequence is shown below:9,= (-2):9,19,= 5Which function can be used todetermine the nth term?a. f(n) = -10(-2)-1b. f(n) = -2/5 - (5)"-1c. f(n) = 5(-2)-1d. f(n) = -5/2 · (-2)-1

21 A Sequence Is Shown Below9 2919 5Which Function Can Be Used Todetermine The Nth Terma Fn 1021b Fn 25 51c Fn 521d Fn 52 21 class=

Answer :

[tex]\begin{gathered} g_n=(-2)g_{n-1} \\ g_1=5 \end{gathered}[/tex][tex]\begin{gathered} C\text{.} \\ f(n)=5(-2)^{n-1} \\ f(1)=5(-2)^0 \\ f(1)=5 \end{gathered}[/tex]

C.

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