What decimal number could get you 2.5,3.2, and 0.3?

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

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.