Only 1-5 on the classify part please !

For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?