Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a functi

Question

Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a function?

Include the following in your answer:

Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic sequence?
Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the geometric sequence?
Give at least two real-life examples of a sequences or series. One example should be arithmetic, and the second should be geometric. Explain how these examples would affect you personally

Answer 1

It is a function as for each n you have a defined term of the sequence
For an arithmetic sequence a_n=a 1+ n *r(linear function) For an geometric sequence a_n =a_1*r^n exponential
Arithmetic sequence is your age
A geometric sequence would be the annual amount of a bank deposit
If you deposit C at the end of the first year you haveC(1+r)
at the end of the second year you have C(1+r)^2 and so on

Answer 2

I dont know the answer thats why I am asking