Question

Identify the correct formula for the following sequence.

14, 19, 24, 29, 34, ...

a^n = 5n + 9
a^n = 45n
a^n = 9n + 5
a^n = 5n - 9

Answer 1

a^n = \[a _{n}\]

Answer 2

hmm any ideas on the "common difference"?

Answer 3

I think:
\[a _{n}=5n+9\]

Answer 4

\(\large a_{\color{brown}{ n}}=a_1+({\color{brown}{ n}}-1)\quad
\begin{cases}
{\color{blue}{ d}}=common\ difference\\
{\color{brown}{ n}}=n^{th}\ term
\end{cases}\)

Answer 5

hmm \(\large a_{\color{brown}{ n}}=a_1+({\color{brown}{ n}}-1)\quad
\begin{cases}
a_1=1^{st}\ term\\
{\color{blue}{ d}}=common\ difference\\
{\color{brown}{ n}}=n^{th}\ term
\end{cases}\)

Answer 6

Maybe try each equation with one of the values for n and see which works?

Answer 7

@jdoe0001 please, you have to check in which among the formulae indicated, the numerical data are adapting

Answer 8

@camerondoherty yes!

Answer 9

Michele_Laino I thought that is what's expected for CrazyCountryGirl to do

Answer 10

@jdoe Sorry, Sorry, I believed you got confused!

Answer 11

hmmm I think I have a missing "d" but anyhow \(\large a_{\color{brown}{ n}}=a_1+({\color{brown}{ n}}-1){\color{blue}{ d}}\quad
\begin{cases}
a_1=1^{st}\ term\\
{\color{blue}{ d}}=common\ difference\\
{\color{brown}{ n}}=n^{th}\ term
\end{cases}\)