Answer:
Explanation:
sequence: 15, 5, -5, -15, -25
solve:
1st rule 25 - 10n:
25 - 10(0) = 15
25 - 10(2) = 5
25 - 10(3) = -5
25 - 10(4) = -15
25 - 10(5) = -25
second rule using 15 - 10(n - 1):
15 - 10(1 - 1) = 15
15 - 10(2 - 1) = 5
15 - 10(3 - 1) = -5
15 - 10(4 - 1) = -15
15 - 10(5 - 1) = -25
