Question

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

Answer 1

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

C.