Question

Find an explicit formula for the arithmetic sequence 170, 85, 0, -85,....

Answer 1

170-85(n-1)

Explanation:

Answer 2

The arithmetic sequence is x - 85 for each one.

170 - 85 = 85
85 - 85 = 0
0 - 85 = -85
and so on

so you subtract 85 each time

hope this helps