Answer:



Arithmetic sequence
Step-by-step explanation:
We are given that
A(1)=9
We have to find first three terms and identify the sequence is geometric or arithmetic.
Substitute n=1
Then, we get

For n=2

For n=3





When the difference of consecutive terms are constant then the sequence is arithmetic sequence.
Therefore, given sequence is arithmetic sequence.
Answer:
17.25 or 69/4 as a fraction
Step-by-step explanation:
use the desmos scientific calculator :) hope this helped
Answer:
340,000
Step-by-step explanation: