Answer :
Answer:
An = A(n-1) - 4
Step-by-step explanation:
21 - 17 = 4
17 - 13 = 4
13 - 9 = 4
9 - 5 = 4
5 - 1 = 4
ratio = 4
An = A(n-1) - 4
Answer:
An = A(n-1) - 4
Step-by-step explanation:
21 - 17 = 4
17 - 13 = 4
13 - 9 = 4
9 - 5 = 4
5 - 1 = 4
ratio = 4
An = A(n-1) - 4