HELP!! Why might you choose to write a recursive formula rather than an explicit formula to define a sequence

A. You need to know the 54th term in the sequence

B. The sequence is neither arithmetic or geometric

C. You need to know the value of three non-sequential terms in the sequence

D. The sequence is strictly geometric

I believe that the answer is D

Recursive formulas are generally used for finding the nth terms of a sequence, where a(n) is the computation of all the prior values listed. Explicit formulas can compute a(n) using its position.

its B i took the quiz C and D are wrong and my quiz says B is correct

Step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for