Answer:
Step-by-step explanation:
t - 1 - t^3 - 4t
-t^3 - 3t
D. There is a 5/8 chance each time. You would multiply that together to get the answer seen in D.
From the recursive rule

it follows that


and so on. Notice how the subscript on a on the right side and the coefficient multiplied by 13 add up to n (n - 2 + 2 = n; n - 3 + 3 = n; and so on). If we continue the pattern, we'll end up with

so that the explicit rule for the n-th term in the sequence is

I think that it is A, 180..