5, 10, 15, 20, 5n, 470
You just need to multiply the value by 5.
A recursive definition for the sequence shown above can be x = n-5.
21 - 5 = 16
16 - 5 = 11
11 - 5 = 6
and so on...
The number sequence has a difference of 5 in each of the values before and after them.
Answer:
The answer is A. AB and AC are congruent
