Answer:
Linear functions.
Exponential functions.
Step-by-step explanation:
An example of an arithmetic sequence is 1, 3, 5, 7, common difference is 2 and is modelled by the linear function
1 + 2(n -1).
A geometric sequence might be 2, 4, 8, 16 where there is a common ratio of 2 and is modelled by 2.(2)^n-1).