Answer:
The 4th term is 64
Step-by-step explanation:
This is a recursive formula. It tells us that the first term is 13 and that the common difference is 17.
d(1) = 13
d(2) = d(1) + 17 = 30
d(3) = d (2) + 17 = 47
d(4) = d(3) + 17 = 64
