For the x-values 1, 2, 3, and so on, the y-values of a function form an arithmetic sequence that decreases in value. What type of function is it?
A. Exponential decay
B. Exponential growth
C. Decreasing linear
D. Increasing linear

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.